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1. Conservation and monitoring of wildlife in logged tropical forests: A study in Western Equatorial Africa

Author

Zwerts, Joeri Alexander, Faculteit Betawetenschappen, Sterck, Liesbeth, Verweij, Pita, van Kuijk, Marijke, Maisels, Fiona, and University Utrecht

Subjects
Cameraval, Eco-akoestiek, Centraal Afrika, Camera trapping, Central Africa, Dieren in het wild, Tropisch bos, Nature conservation, Biomonitoring, Eco-acoustics, Tropical Forest, Wildlife, Natuur Behoud
Abstract

Tropical forests harbor the largest share of all terrestrial biodiversity, including 62% of all terrestrial vertebrate species. Of the remaining tropical forests, more than one-quarter are designated as logging concessions, potentially putting wildlife at risk. Forest certification systems like the Forest Stewardship Council (FSC) claim that they address threats to biodiversity, but studies have to date not resulted in robust verification of impacts of certified logging on wildlife communities due to limitations in research design and scale. Measuring impact is important for informed decision-making and data-driven policies. For this, reliable population monitoring is a prerequisite. In this thesis the general aims are to assess whether wildlife is more effectively conserved in FSC-certified logging concessions than in non-FSC concessions, and to explore how wildlife populations can best be monitored in tropical forests. I start this thesis by reviewing the applications of the three main monitoring methods to provide guidance on wildlife monitoring in tropical forests. Then, I examine the knowledge gap concerning the impacts of FSC-certified forestry, by assessing whether wildlife is more effectively conserved in FSC-certified logging concessions than in non-FSC concessions. The data were gathered by using camera traps in fourteen forestry concessions in Western Equatorial Africa. I found that FSC-certified forestry benefits mammals when compared to non-FSC forestry, with the most pronounced positive impacts for mammals weighing 10 kg and more. Next, I develop and test two wildlife monitoring methods: the use of sound for primate monitoring, and the use of soundscapes as a proxy for the overall biodiversity in a forest. Species-specific monitoring using sound covers a different species range than camera traps. However, sound monitoring requires automated classification for it to be useful. For soundscapes, interpretation of changes in the soundscape and quantification of individual species’ contributions are the main challenges, as well as interpreting the relationship between the structure of the soundscape and local landscape heterogeneity. Further development and enhancement of wildlife monitoring methods is essential for impact verification and improvement of forest certification. Improved wildlife monitoring methods may also aid the development of biodiversity credit systems, potentially yielding new revenue streams for conservation.

Published
2023

3. Conservation and monitoring of wildlife in logged tropical forests: A study in Western Equatorial Africa

Author

Animal Behaviour and Cognition, Sub Ecology and Biodiversity, Sub Animal Behaviour and Cognition, Ecology and Biodiversity, Sterck, Liesbeth, Verweij, Pita, van Kuijk, Marijke, Maisels, Fiona, Zwerts, Joeri Alexander, Animal Behaviour and Cognition, Sub Ecology and Biodiversity, Sub Animal Behaviour and Cognition, Ecology and Biodiversity, Sterck, Liesbeth, Verweij, Pita, van Kuijk, Marijke, Maisels, Fiona, and Zwerts, Joeri Alexander

Published
2023

4. Water table depth modulates productivity and biomass across Amazonian forests

Author

Sousa, Thaiane R., Schietti, Juliana, Ribeiro, Igor O., Emílio, Thaise, Fernández, Rafael Herrera, ter Steege, Hans, Castilho, Carolina V., Esquivel-Muelbert, Adriane, Baker, Timothy, Pontes-Lopes, Aline, Silva, Camila V.J., Silveira, Juliana M., Derroire, Géraldine, Castro, Wendeson, Mendoza, Abel Monteagudo, Ruschel, Ademir, Prieto, Adriana, Lima, Adriano José Nogueira, Rudas, Agustín, Araujo-Murakami, Alejandro, Gutierrez, Alexander Parada, Andrade, Ana, Roopsind, Anand, Manzatto, Angelo Gilberto, Di Fiore, Anthony, Torres-Lezama, Armando, Dourdain, Aurélie, Marimon, Beatriz, Marimon, Ben Hur, Burban, Benoit, van Ulft, Bert, Herault, Bruno, Quesada, Carlos, Mendoza, Casimiro, Stahl, Clement, Bonal, Damien, Galbraith, David, Neill, David, de Oliveira, Edmar A., Hase, Eduardo, Jimenez-Rojas, Eliana, Vilanova, Emilio, Arets, Eric, Berenguer, Erika, Alvarez-Davila, Esteban, Honorio Coronado, Eurídice N., Almeida, Everton, Coelho, Fernanda, Valverde, Fernando Cornejo, Elias, Fernando, Brown, Foster, Bongers, Frans, Arevalo, Freddy Ramirez, Lopez-Gonzalez, Gabriela, van der Heijden, Geertje, Aymard C., Gerardo A., Llampazo, Gerardo Flores, Pardo, Guido, Ramírez-Angulo, Hirma, do Amaral, Iêda Leão, Vieira, Ima Célia Guimarães, Huamantupa-Chuquimaco, Isau, Comiskey, James A., Singh, James, Espejo, Javier Silva, del Aguila-Pasquel, Jhon, Zwerts, Joeri Alexander, Talbot, Joey, Terborgh, John, Ferreira, Joice, Barroso, Jorcely G., Barlow, Jos, Camargo, José Luís, Stropp, Juliana, Peacock, Julie, Serrano, Julio, Melgaço, Karina, Ferreira, Leandro V., Blanc, Lilian, Poorter, Lourens, Gamarra, Luis Valenzuela, Aragão, Luiz, Arroyo, Luzmila, Silveira, Marcos, Peñuela-Mora, Maria Cristina, Vargas, Mario Percy Núñez, Toledo, Marisol, Disney, Mat, Réjou-Méchain, Maxime, Baisie, Michel, Kalamandeen, Michelle, Camacho, Nadir Pallqui, Cardozo, Nállarett Dávila, Silva, Natalino, Pitman, Nigel, Higuchi, Niro, Banki, Olaf, Loayza, Patricia Alvarez, Graça, Paulo M.L.A., Morandi, Paulo S., van der Meer, Peter J., van der Hout, Peter, Naisso, Pétrus, Camargo, Plínio Barbosa, Salomão, Rafael, Thomas, Raquel, Boot, Rene, Umetsu, Ricardo Keichi, da Costa Silva, Richarlly, Burnham, Robyn, Zagt, Roderick, Martinez, Rodolfo Vasquez, Brienen, Roel, Ribeiro, Sabina Cerruto, Lewis, Simon L., Vieira, Simone Aparecida, de Almeida Reis, Simone Matias, Fauset, Sophie, Laurance, Susan, Feldpausch, Ted, Erwin, Terry, Killeen, Timothy, Wortel, Verginia, Moscoso, Victor Chama, Vos, Vincent, Huasco, Walter Huaraca, Laurance, William, Malhi, Yadvinder, Magnusson, William E., Phillips, Oliver L., Costa, Flávia R.C., Animal Behaviour and Cognition, Sub Animal Behaviour and Cognition, Sub Ecology and Biodiversity, Ecology and Biodiversity, Animal Behaviour and Cognition, Sub Animal Behaviour and Cognition, Sub Ecology and Biodiversity, Ecology and Biodiversity, and University of St Andrews. School of Geography & Sustainable Development

Subjects
forest dynamics, Evolution, Bos- en Landschapsecologie, tropical ecology, Behavior and Systematics, groundwater, SDG 13 - Climate Action, Forest and Landscape Ecology, Bosecologie en Bosbeheer, Vegetatie, Ecology, Evolution, Behavior and Systematics, above-ground biomass, MCC, Global and Planetary Change, GE, Vegetation, Ecology, seasonality, carbon, DAS, PE&RC, AC, Forest Ecology and Forest Management, Vegetatie, Bos- en Landschapsecologie, Vegetation, Forest and Landscape Ecology, GE Environmental Sciences
Abstract

Funding: This work was part of the PhD thesis of the first author, developed at the Graduate Program in Ecology of the National Institute of Amazonian Research (INPA), with a fellowship funded by Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil (CAPES), Finance Code 001, (88887.141433/2017-00). The authors are also grateful for the financial and research support of the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Amazonas State Research Foundation (FAPEAM), the Newton Fund via the Natural Environment Research Council (NE/M022021/1 to O.L.P. and F.R.C.C.), PPBio Manaus, Centro de Estudos Integrados da Biodiversidade Amazônica and RAINFOR. We also thank Karina Melgaço, Aurora Levesley and Gabriela Lopez-Gonzalez for curating and managing ForestPlots.net. This was ForestPlots.net Project 26 led by Thaiane Sousa. This is publication number 832 of the Technical Series of the Biological Dynamics of Forest Fragments Project (BDFFP, INPA/STRI). Aim : Water availability is the major driver of tropical forest structure and dynamics. Most research has focused on the impacts of climatic water availability, whereas remarkably little is known about the influence of water table depth and excess soil water on forest processes. Nevertheless, given that plants take up water from the soil, the impacts of climatic water supply on plants are likely to be modulated by soil water conditions. Location : Lowland Amazonian forests. Time period : 1971–2019. Methods : We used 344 long-term inventory plots distributed across Amazonia to analyse the effects of long-term climatic and edaphic water supply on forest functioning. We modelled forest structure and dynamics as a function of climatic, soil-water and edaphic properties. Results : Water supplied by both precipitation and groundwater affects forest structure and dynamics, but in different ways. Forests with a shallow water table (depth

Published
2022

5. Water table depth modulates productivity and biomass across Amazonian forests

Author

Animal Behaviour and Cognition, Sub Animal Behaviour and Cognition, Sub Ecology and Biodiversity, Ecology and Biodiversity, Sousa, Thaiane R., Schietti, Juliana, Ribeiro, Igor O., Emílio, Thaise, Fernández, Rafael Herrera, ter Steege, Hans, Castilho, Carolina V., Esquivel-Muelbert, Adriane, Baker, Timothy, Pontes-Lopes, Aline, Silva, Camila V.J., Silveira, Juliana M., Derroire, Géraldine, Castro, Wendeson, Mendoza, Abel Monteagudo, Ruschel, Ademir, Prieto, Adriana, Lima, Adriano José Nogueira, Rudas, Agustín, Araujo-Murakami, Alejandro, Gutierrez, Alexander Parada, Andrade, Ana, Roopsind, Anand, Manzatto, Angelo Gilberto, Di Fiore, Anthony, Torres-Lezama, Armando, Dourdain, Aurélie, Marimon, Beatriz, Marimon, Ben Hur, Burban, Benoit, van Ulft, Bert, Herault, Bruno, Quesada, Carlos, Mendoza, Casimiro, Stahl, Clement, Bonal, Damien, Galbraith, David, Neill, David, de Oliveira, Edmar A., Hase, Eduardo, Jimenez-Rojas, Eliana, Vilanova, Emilio, Arets, Eric, Berenguer, Erika, Alvarez-Davila, Esteban, Honorio Coronado, Eurídice N., Almeida, Everton, Coelho, Fernanda, Valverde, Fernando Cornejo, Elias, Fernando, Brown, Foster, Bongers, Frans, Arevalo, Freddy Ramirez, Lopez-Gonzalez, Gabriela, van der Heijden, Geertje, Aymard C., Gerardo A., Llampazo, Gerardo Flores, Pardo, Guido, Ramírez-Angulo, Hirma, do Amaral, Iêda Leão, Vieira, Ima Célia Guimarães, Huamantupa-Chuquimaco, Isau, Comiskey, James A., Singh, James, Espejo, Javier Silva, del Aguila-Pasquel, Jhon, Zwerts, Joeri Alexander, Talbot, Joey, Terborgh, John, Ferreira, Joice, Barroso, Jorcely G., Barlow, Jos, Camargo, José Luís, Stropp, Juliana, Peacock, Julie, Serrano, Julio, Melgaço, Karina, Ferreira, Leandro V., Blanc, Lilian, Poorter, Lourens, Gamarra, Luis Valenzuela, Aragão, Luiz, Arroyo, Luzmila, Silveira, Marcos, Peñuela-Mora, Maria Cristina, Vargas, Mario Percy Núñez, Toledo, Marisol, Disney, Mat, Réjou-Méchain, Maxime, Baisie, Michel, Kalamandeen, Michelle, Camacho, Nadir Pallqui, Cardozo, Nállarett Dávila, Silva, Natalino, Pitman, Nigel, Higuchi, Niro, Banki, Olaf, Loayza, Patricia Alvarez, Graça, Paulo M.L.A., Morandi, Paulo S., van der Meer, Peter J., van der Hout, Peter, Naisso, Pétrus, Camargo, Plínio Barbosa, Salomão, Rafael, Thomas, Raquel, Boot, Rene, Umetsu, Ricardo Keichi, da Costa Silva, Richarlly, Burnham, Robyn, Zagt, Roderick, Martinez, Rodolfo Vasquez, Brienen, Roel, Ribeiro, Sabina Cerruto, Lewis, Simon L., Vieira, Simone Aparecida, de Almeida Reis, Simone Matias, Fauset, Sophie, Laurance, Susan, Feldpausch, Ted, Erwin, Terry, Killeen, Timothy, Wortel, Verginia, Moscoso, Victor Chama, Vos, Vincent, Huasco, Walter Huaraca, Laurance, William, Malhi, Yadvinder, Magnusson, William E., Phillips, Oliver L., Costa, Flávia R.C., Animal Behaviour and Cognition, Sub Animal Behaviour and Cognition, Sub Ecology and Biodiversity, Ecology and Biodiversity, Sousa, Thaiane R., Schietti, Juliana, Ribeiro, Igor O., Emílio, Thaise, Fernández, Rafael Herrera, ter Steege, Hans, Castilho, Carolina V., Esquivel-Muelbert, Adriane, Baker, Timothy, Pontes-Lopes, Aline, Silva, Camila V.J., Silveira, Juliana M., Derroire, Géraldine, Castro, Wendeson, Mendoza, Abel Monteagudo, Ruschel, Ademir, Prieto, Adriana, Lima, Adriano José Nogueira, Rudas, Agustín, Araujo-Murakami, Alejandro, Gutierrez, Alexander Parada, Andrade, Ana, Roopsind, Anand, Manzatto, Angelo Gilberto, Di Fiore, Anthony, Torres-Lezama, Armando, Dourdain, Aurélie, Marimon, Beatriz, Marimon, Ben Hur, Burban, Benoit, van Ulft, Bert, Herault, Bruno, Quesada, Carlos, Mendoza, Casimiro, Stahl, Clement, Bonal, Damien, Galbraith, David, Neill, David, de Oliveira, Edmar A., Hase, Eduardo, Jimenez-Rojas, Eliana, Vilanova, Emilio, Arets, Eric, Berenguer, Erika, Alvarez-Davila, Esteban, Honorio Coronado, Eurídice N., Almeida, Everton, Coelho, Fernanda, Valverde, Fernando Cornejo, Elias, Fernando, Brown, Foster, Bongers, Frans, Arevalo, Freddy Ramirez, Lopez-Gonzalez, Gabriela, van der Heijden, Geertje, Aymard C., Gerardo A., Llampazo, Gerardo Flores, Pardo, Guido, Ramírez-Angulo, Hirma, do Amaral, Iêda Leão, Vieira, Ima Célia Guimarães, Huamantupa-Chuquimaco, Isau, Comiskey, James A., Singh, James, Espejo, Javier Silva, del Aguila-Pasquel, Jhon, Zwerts, Joeri Alexander, Talbot, Joey, Terborgh, John, Ferreira, Joice, Barroso, Jorcely G., Barlow, Jos, Camargo, José Luís, Stropp, Juliana, Peacock, Julie, Serrano, Julio, Melgaço, Karina, Ferreira, Leandro V., Blanc, Lilian, Poorter, Lourens, Gamarra, Luis Valenzuela, Aragão, Luiz, Arroyo, Luzmila, Silveira, Marcos, Peñuela-Mora, Maria Cristina, Vargas, Mario Percy Núñez, Toledo, Marisol, Disney, Mat, Réjou-Méchain, Maxime, Baisie, Michel, Kalamandeen, Michelle, Camacho, Nadir Pallqui, Cardozo, Nállarett Dávila, Silva, Natalino, Pitman, Nigel, Higuchi, Niro, Banki, Olaf, Loayza, Patricia Alvarez, Graça, Paulo M.L.A., Morandi, Paulo S., van der Meer, Peter J., van der Hout, Peter, Naisso, Pétrus, Camargo, Plínio Barbosa, Salomão, Rafael, Thomas, Raquel, Boot, Rene, Umetsu, Ricardo Keichi, da Costa Silva, Richarlly, Burnham, Robyn, Zagt, Roderick, Martinez, Rodolfo Vasquez, Brienen, Roel, Ribeiro, Sabina Cerruto, Lewis, Simon L., Vieira, Simone Aparecida, de Almeida Reis, Simone Matias, Fauset, Sophie, Laurance, Susan, Feldpausch, Ted, Erwin, Terry, Killeen, Timothy, Wortel, Verginia, Moscoso, Victor Chama, Vos, Vincent, Huasco, Walter Huaraca, Laurance, William, Malhi, Yadvinder, Magnusson, William E., Phillips, Oliver L., and Costa, Flávia R.C.

Published
2022

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