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Analyzing the spatial and temporal properties of information flow with a multi-century perspective could illuminate the sustainability of human resource-use strategies. This paper uses historical and archaeological datasets to assess how spatial, temporal, cognitive, and cultural limitations impact the generation and flow of information about ecosystems within past societies, and thus lead to tradeoffs in sustainable practices. While it is well understood that conflicting priorities can inhibit successful outcomes, case studies from Eastern Polynesia, the North Atlantic, and the American Southwest suggest that imperfect information can also be a major impediment to sustainability. We formally develop a conceptual model of Environmental Information Flow and Perception (EnIFPe) to examine the scale of information flow to a society and the quality of the information needed to promote sustainable coupled natural-human systems. In our case studies, we assess key aspects of information flow by focusing on food web relationships and nutrient flows in socio-ecological systems, as well as the life cycles, population dynamics, and seasonal rhythms of organisms, the patterns and timing of species’ migration, and the trajectories of human-induced environmental change. We argue that the spatial and temporal dimensions of human environments shape society's ability to wield information, while acknowledging that varied cultural factors also focus a society's ability to act on such information. Our analyses demonstrate the analytical importance of completed experiments from the past, and their utility for contemporary debates concerning managing imperfect information and addressing conflicting priorities in modern environmental management and resource use.

With climate, biodiversity and inequity crises squarely upon us, never has there been a more pressing time to rethink how we conceptualize, understand and manage our relationship with Earth's biodiversity. Here, we describe governance principles of 17 Indigenous Nations from the Northwest Coast of North America used to understand and steward relationships among all components of nature, including humans. We then chart the colonial origins of biodiversity science and use the complex case of sea otter recovery to illuminate how ancestral governance principles can be mobilized to characterize, manage and restore biodiversity in more inclusive, integrative and equitable ways. To enhance environmental sustainability, resilience and social justice amid today's crises, we need to broaden who benefits from and participates in the sciences of biodiversity by expanding the values and methodologies that shape such initiatives. In practice, biodiversity conservation and natural resource management need to shift from centralized, siloed approaches to those that can accommodate plurality in values, objectives, governance systems, legal traditions and ways of knowing. In doing so, developing solutions to our planetary crises becomes a shared responsibility. This article is part of the theme issue ‘Detecting and attributing the causes of biodiversity change: needs, gaps and solutions’.

Climate change is altering the distribution and composition of marine fish populations globally, which presents substantial risks to the social and economic well-being of humanity. While deriving long-term climatic baselines is an essential step for detecting and attributing the magnitude of climate change and its impacts, these baselines tend to be limited to historical datasets and palaeoecological sediment records. Here, we develop a method for estimating the 'ancient Mean Temperature of the Catch' (aMTC) using Indigenous fisheries catch records from two archaeological sites in the northeast Pacific. Despite different catch compositions, we observe an increase in aMTC over a 5,000-year period at two contemporaneously occupied archaeological sites in southwestern British Columbia, Canada. We document cooler catches from 5,000 to 3,000 cal yr BP and comparatively warmer catches from 1,800 to 250 cal yr BP. These warmer temperatures are broadly consistent with palaeoceanographic sea surface temperature proxies from British Columbia and Alaska. Because this method requires converting measures of fish bones into estimates of fish size structure, abundance, biomass, and finally aMTC, opportunities exist to account for both variation and uncertainty at every step. Nevertheless, given that preindustrial fisheries data are ubiquitous in coastal archaeological sites, this method has the potential to be applied globally to broaden the temporal and geographic scale of ocean temperature baselines.The online version contains supplementary material available at 10.1007/s10641-022-01243-7.

Coastal shell midden deposits are a quintessential component of the archaeological record on the Pacific Northwest Coast. Despite their importance in informing the cultural and environmental histories of Indigenous peoples, research on shell middens has largely not sought to address the physical extent of these cultural deposits, which requires estimating shape, depth, and volume. Here, we present a new scalable geospatial model, designed to work with legacy survey data, for estimating midden volumes based on applying a regular geometric solid to sites with known extent and depth. We evaluate the accuracy of this technique using percussion core, total station, and lidar data from eight sites in Tseshaht territory on western Vancouver Island and three sites on the north coast of British Columbia (Canada). As part of the evaluation process of our results, we calculate uncertainty using subsurface core depth data and then compare generalized and modeled midden volume estimates. We demonstrate an accurate general model applied at the regional scale across a systematically surveyed landscape. This work presents the first landscape-scale measure of midden extents and volume within our study area, with relevance to historical ecology and settlement patterns.

This article highlights the utility of vibracore technology to sample deep shell midden deposits on the Central Pacific Coast of British Columbia, Canada. Analysis of six core samples and 21 radiocarbon dates revealed that the archaeological deposits extended to a depth of 544 cm below surface and that occupation began approximately 6,000 years ago, continuing into the sixteenth century AD. Zooarchaeological identification of fine screened (2 mm) sediments shows that fish constitute 99.8% of identified vertebrate fauna, with a focus on herring (Clupea pallasii), salmon (Oncorhynchus sp.), rockfish (Sebastes sp.), and greenling (Hexagrammos sp.), followed by a variety of other fish taxa utilized throughout the occupation of this site. Despite a much smaller examined volume relative to conventional excavation, vibracoring was effective in recovering deep, stratigraphically intact, and adequate samples of zooarchaeological fisheries data as well as a considerable number of stone, bone, and shell artifacts (an estimated 550 artifacts per cubic meter of cultural sediments). These results show a persistent and sustainable ancient fishery through six millennia until the contact period. The field and laboratory methods described are especially conducive to sampling large and deep shell midden deposits repetitively.

Environmental management and monitoring must reconcile social and cultural objectives with biodiversity stewardship to overcome political barriers to conservation. Suitability modelling offers a powerful tool for such “biocultural” approaches, but examples remain rare. Led by the Stewardship Authority of the Kitasoo/Xai’xais First Nation in coastal British Columbia, Canada, we developed a locally informed suitability model for a key biocultural indicator, culturally modified trees (CMTs). CMTs are trees bearing evidence of past cultural use that are valued as tangible markers of Indigenous heritage and protected under provincial law. Using a spatial multi-criteria evaluation framework to predict CMT suitability, we developed two cultural predictor variables informed by Kitasoo/Xai’xais cultural expertise and ethnographic data in addition to six biophysical variables derived from LiDAR and photo interpretation data. Both cultural predictor variables were highly influential in our model, revealing that proximity to known habitation sites and accessibility to harvesters (by canoe and foot) more strongly influenced suitability for CMTs compared with site-level conditions. Applying our model to commercial forestry governance, we found that high CMT suitability areas are 51% greater inside the timber harvesting land base than outside. This work highlights how locally led suitability modelling can improve the social and evidentiary dimensions of environmental management.

Domestic dogs are frequently encountered in Indigenous archaeological sites on the Northwest Coast of North America. Although dogs depended on human communities for care and provisioning, archaeologists lack information about the specific foods dogs consumed. Previous research has used stable isotope analysis of dog diets for insight into human subsistence (‘canine surrogacy’ model) and identified considerable use of marine resources. Here, we use zooarchaeological data to develop and apply a Bayesian mixing model (MixSIAR) to estimate dietary composition from 14 domestic dogs and 13 potential prey taxa from four archaeological sites (2,900–300 BP) in Tseshaht First Nation territory on western Vancouver Island, British Columbia, Canada. Two candidate models that best match zooarchaeological data indicate dogs predominantly consumed salmon and forage fish (35–65%), followed by nearshore fish (4–40%), and marine mammals (2–30%). We compared these isotopic data to dogs across the Northwest Coast, which indicated a pronounced marine diet for Tseshaht dogs and, presumably, their human providers. These results are broadly consistent with the canine surrogacy model as well as help illuminate human participation in pre-industrial marine food webs and the long-term role of fisheries in Indigenous economies and lifeways.

Historical ecology has revolutionized our understanding of fisheries and cultural landscapes, demonstrating the value of historical data for evaluating the past, present, and future of Earth’s ecosystems. Despite several important studies, Indigenous fisheries generally receive less attention from scholars and managers than the 17th–20th century capitalist commercial fisheries that decimated many keystone species, including oysters. We investigate Indigenous oyster harvest through time in North America and Australia, placing these data in the context of sea level histories and historical catch records. Indigenous oyster fisheries were pervasive across space and through time, persisting for 5000–10,000 years or more. Oysters were likely managed and sometimes “farmed,” and are woven into broader cultural, ritual, and social traditions. Effective stewardship of oyster reefs and other marine fisheries around the world must center Indigenous histories and include Indigenous community members to co-develop more inclusive, just, and successful strategies for restoration, harvest, and management. Results - Indigenous fisheries of abundance. - Oysters in monuments and ritual landscapes. - Not all forgotten: Indigenous use of oysters. Indigenous - Capitalist commercial fisheries and ecological collapse. Discussion Methods

The historic extirpation and subsequent recovery of sea otters (Enhydra lutris) have profoundly changed coastal social-ecological systems across the northeastern Pacific. Today, the conservation status of sea otters is informed by estimates of population carrying capacity or growth rates independent of human impacts. However, archaeological and ethnographic evidence suggests that for millennia, complex hunting and management protocols by Indigenous communities limited sea otter abundance near human settlements to reduce the negative impacts of this keystone predator on shared shellfish prey. To assess relative sea otter prevalence in the Holocene, we compared the size structure of ancient California mussels (Mytilus californianus) from six archaeological sites in two regions on the Pacific Northwest Coast, to modern California mussels at locations with and without sea otters. We also quantified modern mussel size distributions from eight locations on the Central Coast of British Columbia, Canada, varying in sea otter occupation time. Comparisons of mussel size spectra revealed that ancient mussel size distributions are consistently more similar to modern size distributions at locations with a prolonged absence of sea otters. This indicates that late Holocene sea otters were maintained well below carrying capacity near human settlements as a result of human intervention. These findings illuminate the conditions under which sea otters and humans persisted over millennia prior to the Pacific maritime fur trade and raise important questions about contemporary conservation objectives for an iconic marine mammal and the social-ecological system in which it is embedded.

Domestic dogs (Canis familiaris) occur in the archaeological record throughout North America but few zooarchaeological studies have examined the extent of wild and domestic canids using multi-site observations across regions. Here, we present a meta-analysis of 172,310 mammal specimens identified from 210 archaeological sites along the Northwest Coast focusing on canid abundance, distribution, and osteological identifications. We show that canids have a ubiquitous geographic distribution and a high relative abundance in particular Northwest Coast sub-regions and that species-level identifications are overwhelmingly of domestic dogs in contrast to ~1% of non-domestic canids (wolf, coyote, and fox). Along with geochemical and genetic data, these zooarchaeological observations indicate a variety of roles for dogs including hunting, companionship, and wool production in a region lacking terrestrial agriculture and domestic livestock. We suggest the frequently applied taxonomic status of ‘indeterminate canid’ underestimates the extent to which domestic dogs played key roles in regional economies and cultural practices. Increased attention to resolving taxonomic ambiguity of canids through improving comparative collections and osteometric datasets will help clarify the non-conventional domestication pathways practiced by Northwest Coast peoples.

Fisheries are of fundamental importance to Indigenous peoples of the Pacific Northwest of North America today and in the past but few archaeological analyses have documented geographic patterning in fisheries across the entire region. This paper adopts meta-analysis methods and GIS-based spatial visualizations to survey the single largest compilation of fine-screened zooarchaeological fisheries data reported to date, including 513,605 fish remains identified at 222 sites from Oregon to southeast Alaska. These systematically collected zooarchaeological data indicate the most ubiquitous and proportionally abundant fish taxa over the late Holocene and reveal previously undocumented spatial patterning, indicating where certain fish taxa are consistently found in high relative proportions. Rather than seeking to evaluate chronological and/or evolutionary change, this study explores the environmental and cultural basis for assessing variability in Indigenous fisheries over millennial time scales. Specifically, we observe Pacific herring and the Pacific salmons to be the two most ubiquitous and proportionally abundant fish taxa across the Northwest Coast followed by flatfishes, sculpins, rockfishes, greenlings, dogfish, and a host of other poorly known taxa that represent consistent fishing effort. We document geographic patterning in the abundance and ubiquity of a range of fish including greater abundance of salmons in northern portions of the study area and outline trends that could represent biogeographic ranges for northern anchovy, Pacific hake, and pollock, among others. We conclude that examining patterning in the ubiquity and rank-order abundance represented by archaeological fisheries data offers significant potential for linking regionally distinct cultural practices noted in the 18th and 19th centuries to much longer human and ecological histories over the Holocene.

Developing accurate methods for estimating animal body size from fragmentary remains is a key focus of zooarchaeological research. Here, we respond to Greg Campbell's critique regarding methods we recently developed to predict Mytilus californianus shell size from archaeological contexts using linear regression. We show that Campbell's assertion that our regressions are “inaccurate” is incorrect and mischaracterizes the premise and results of our study. We appreciate that Campbell draws attention to the importance of allometry but do not agree that archaeologists must first describe ontogenetic size relationships before developing a practical method for size prediction in zooarchaeology. We further argue that pooling data from broad geographic scales incorporates diverse growing conditions into a predictive model to account for the uncertainties across archaeological time scales. We conclude by highlighting the difference between zoological and zooarchaeological research goals and emphasize that the precision required for a particular analysis can create a mismatch between analytical expectations and archaeologically applicable research questions.

California mussel (Mytilus californianus) are ubiquitous shellfish species in coastal archaeological sites throughout western North America but are often highly fragmentary when recovered in small-volume ‘column’ or ‘bulk’ samples typically used to quantify shellfish assemblages. Archaeological research has predominantly focused on evaluating the dietary contribution of Mytilus but most studies assume an average meat weight or use categorical size classifications to determine subsistence strategies and harvest profiles. In this paper, we develop and evaluate a regression-based method for estimating shell length and meat weight for fragmentary Mytilus remains. Our regressions are based on live-collected M. californianus specimens from multiple locations in California and British Columbia and provide considerable statistical confidence for predicting length and meat weight. We also apply the same regressions to a collection of Mytilus trossulus and show similar predictive equations, indicating this method can be used in cases where it is not possible to distinguish morphologically between M. californianus and M. trossulus. We demonstrate how these results improve upon previous size-classification methods and discuss the potential for applying these measurements to enhance the relevance of these zooarchaeological data for modern marine conservation and management efforts.

We examined the isotopic composition (δ13C and δ15N) of sea otter (Enhydra lutris) bone collagen from ten late Holocene (ca. 5200 years BP–AD 1900) archaeological sites in northern British Columbia (BC), Canada. Because sea otters are now extinct from much of this region and have not fully recolonized their former range (e.g. Haida Gwaii and most of northern BC) these data represent an important first step towards better understanding sea otter foraging ecology in BC. The isotopic data suggest a diet composed primarily of benthic invertebrates, with a very low reliance on epibenthic fish. There is very low isotopic and thus inter-individual dietary variability in Holocene BC sea otters during the late Holocene. Furthermore, zooarchaeological abundance data suggest that otters represented a widespread and significant focus of aboriginal hunting practices on the northern BC coast during the mid- to late-Holocene. The consistent reliance on a small number of low-trophic level prey and limited dietary variability in Holocene BC sea otters may reflect top-down impacts on otter populations by aboriginal peoples. As part of our assessment of sea otter diet, we review trophic discrimination factors (Δ13C and Δ15N) for bone collagen from published literature and find marked variability, with mean values of +3.7 ± 1.6 for Δ13C (n = 21) and +3.6 ± 1.3 for Δ15N (n = 15).

Summary Zooarchaeological data provide direct evidence of long-term human resource utilization relevant to the modern study of sustainability and conservation. On the northwest coast of North America, prehistoric aboriginal communities relied heavily on nearshore marine fish species, many of which have life history characteristics that make them vulnerable to overexploitation. This study examines temporal trends in the abundance and distribution of nearshore fish from skeletal remains recovered from three separate areas of a prehistoric coastal village on the west coast of Vancouver Island (ca. 1800–250 yr BP). Over the course of 1500 years, site inhabitants from these contemporaneously occupied areas regularly utilized Sebastes spp. (rockfish), with varying impacts on abundance and total length. Contrasting temporal trends in Sebastes spp. total length in separate village areas suggest different consequences to prehistoric harvesting practices, differences that can be linked to ethnographic and archaeological evidence of lineage-based territories. These long-term zooarchaeological data provide unique insights into the context and challenges of sustainable resource use in prehistory and can inform contemporary conservation efforts focused on similar species in this modern-day marine protected area.

Zooarchaeology has the potential to make significant contributions to knowledge of pinniped biogeography of import to both archaeologists and environmental scientists. We analyzed northern fur seal remains found in three archaeological sites located along the outer coast of the Northeast Pacific Ocean: Cape Addington Rockshelter in southeast Alaska, Ts’ishaa on the west coast of Vancouver Island, and the Netarts Sandspit site

This paper presents the results of a consensus-driven process identifying 50 priority research questions for historical ecology obtained through crowdsourcing, literature reviews, and in-person workshopping. A deliberative approach was designed to maximize discussion and debate with defined outcomes. Two in-person workshops (in Sweden and Canada) over the course of two years and online discussions were peer facilitated to define specific key questions for historical ecology from anthropological and archaeological perspectives. The aim of this research is to showcase the variety of questions that reflect the broad scope for historical-ecological research trajectories across scientific disciplines. Historical ecology encompasses research concerned with decadal, centennial, and millennial human-environmental interactions, and the consequences that those relationships have in the formation of contemporary landscapes. Six interrelated themes arose from our consensus-building workshop model: (1) climate and environmental change and variability; (2) multi-scalar, multi-disciplinary; (3) biodiversity and community ecology; (4) resource and environmental management and governance; (5) methods and applications; and (6) communication and policy. The 50 questions represented by these themes highlight meaningful trends in historical ecology that distill the field down to three explicit findings. First, historical ecology is fundamentally an applied research program. Second, this program seeks to understand long-term human-environment interactions with a focus on avoiding, mitigating, and reversing adverse ecological effects. Third, historical ecology is part of convergent trends toward transdisciplinary research science, which erodes scientific boundaries between the cultural and natural.

Pacific herring (Clupea pallasii), a foundation of coastal social-ecological systems, is in decline throughout much of its range. We assembled data on fish bones from 171 archaeological sites from Alaska, British Columbia, and Washington to provide proxy measures of past herring distribution and abundance. The dataset represents 435,777 fish bones, dating throughout the Holocene, but primarily to the last 2,500 y. Herring is the single-most ubiquitous fish taxon (99% ubiquity) and among the two most abundant taxa in 80% of individual assemblages. Herring bones are archaeologically abundant in all regions, but are superabundant in the northern Salish Sea and southwestern Vancouver Island areas. Analyses of temporal variability in 50 well-sampled sites reveals that herring exhibits consistently high abundance (>20% of fish bones) and consistently low variance (

Coastal British Columbia is largely a rugged fjord-land archipelago. It has not always been so – over time, the coastline has changed configuration dramatically and the fauna and flora have seen multiple successions and extirpations. Through this, for the last 11,000 RCYBP years at least, resilient people made their living from the ocean and the land, shrugging off or taking advantage of environmental change. Similarly, archaeologists have worked the nooks and crannies of the coast for decades, surveying in the dense forest and digging in the deep middens, subject to similar environmental conditions as those they study and making quiet progress in regional culture histories. In more recent years, this area has been thrust to the forefront of research into the First Peopling of the American continents. As the Clovis First model began to be questioned, alternate modes and routes for the arrival of humans were brought in from the sidelines, including the hypothesized west coast route (e.g. Fladmark 1979). Not much research had been focused on this route, perhaps as Easton (1992) suggests, because of the terrestrial mindset of many archaeologists. Perhaps also, the prospects of finding sites on the deeply drowned landscapes or in the rugged, heavily forested hinterland was prohibitively daunting and led to a pessimistic outlook on success.