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1. Widespread diversity deficits of coral reef sharks and rays

Author

Simpfendorfer, Colin A., Heithaus, Michael R., Heupel, Michelle R., Macneil, M.A., Meekan, Mark, Harvey, Euan, Sherman, C.S., Currey-Randall, Leanne M., Goetze, Jordan S., Kiszka, Jeremy J., Rees, Matthew J., Speed, Conrad W., Udyawer, Vinay, Bond, Mark E., Flowers, Kathryn I., Clementi, Gina M., Valentin-Albanese, Jasmine, Adam, M.S., Ali, Khadeeja, Asher, Jacob, Aylagas, Eva, Beaufort, Océane, Benjamin, Cecilie, Bernard, Anthony T.F., Berumen, Michael L., Bierwagen, Stacy, Birrell, Chico, Bonnema, Erika, Bown, Rosalind M.K., Brooks, Edward J., Brown, J.J., Buddo, Dayne, Burke, Patrick J., Cáceres, Camila, Cambra, Marta, Cardeñosa, Diego, Carrier, Jeffrey C., Casareto, Sara, Caselle, Jennifer E., Charloo, Venkatesh, Cinner, Joshua E., Claverie, Thomas, Clua, Eric E.G., Cochran, Jesse E.M., Cook, Neil, Cramp, Jessica E., d’Alberto, Brooke M., de Graaf, Martin, Dornhege, Mareike C., Espinoza, Mario, Estep, Andy, Fanovich, Lanya, Farabaugh, Naomi F., Fernando, Daniel, Ferreira, Carlos E.L., Fields, Candace Y.A., Flam, Anna L., Floros, Camilla, Fourqurean, Virginia, Gajdzik, Laura, García Barcia, Laura, Garla, Ricardo, Gastrich, Kirk, George, Lachlan, Giarrizzo, Tommaso, Graham, Rory, Guttridge, Tristan L., Hagan, Valerie, Hardenstine, Royale S., Heck, Stephen M., Henderson, Aaron C., Heithaus, Patricia, Hertler, Heidi, Hoyos Padilla, Mauricio, Hueter, Robert E., Jabado, Rima W., Joyeux, Jean-Christophe, Jaiteh, Vanessa, Johnson, Mohini, Jupiter, Stacy D., Kaimuddin, Muslimin, Kasana, Devanshi, Kelley, Megan, Kessel, Steven T., Kiilu, Benedict, Kirata, Taratau, Kuguru, Baraka, Kyne, Fabian, Langlois, Tim, Lara, Frida, Lawe, Jaedon, Lédée, Elodie J.I., Lindfield, Steve, Luna-Acosta, Andrea, Maggs, Jade Q., Manjaji-Matsumoto, B.M., Marshall, Andrea, Martin, Lucy, Mateos-Molina, Daniel, Matich, Philip, Mccombs, Erin, Mcivor, Ashlie, Mclean, Dianne, Meggs, Llewelyn, Moore, Stephen, Mukherji, Sushmita, Murray, Ryan, Newman, Stephen J., Nogués, Josep, Obota, Clay, Ochavillo, Domingo, O'Shea, Owen, Osuka, Kennedy E., Papastamatiou, Yannis P., Perera, Nishan, Peterson, Bradley, Pimentel, Caio R., Pina-Amargós, Fabián, Pinheiro, Hudson T., Ponzo, Alessandro, Prasetyo, Andhika, Quamar, L.M.S., Quinlan, Jessica R., Reis-Filho, José Amorim, Ruiz, Hector, Ruiz-Abierno, Alexei, Sala, Enric, Salinas-de-León, Pelayo, Samoilys, Melita A., Sample, William R., Schärer-Umpierre, Michelle, Schlaff, Audrey M., Schmid, Kurt, Schoen, Sara N., Simpson, Nikola, Smith, Adam N.H., Spaet, Julia L.Y., Sparks, Lauren, Stoffers, Twan, Tanna, Akshay, Torres, Rubén, Travers, Michael J., van Zinnicq Bergmann, Maurits, Vigliola, Laurent, Ward, Juney, Warren, Joseph D., Watts, Alexandra M., Wen, Colin K., Whitman, Elizabeth R., Wirsing, Aaron J., Wothke, Aljoscha, Zarza-González, Esteban, Chapman, Demian D., Simpfendorfer, Colin A., Heithaus, Michael R., Heupel, Michelle R., Macneil, M.A., Meekan, Mark, Harvey, Euan, Sherman, C.S., Currey-Randall, Leanne M., Goetze, Jordan S., Kiszka, Jeremy J., Rees, Matthew J., Speed, Conrad W., Udyawer, Vinay, Bond, Mark E., Flowers, Kathryn I., Clementi, Gina M., Valentin-Albanese, Jasmine, Adam, M.S., Ali, Khadeeja, Asher, Jacob, Aylagas, Eva, Beaufort, Océane, Benjamin, Cecilie, Bernard, Anthony T.F., Berumen, Michael L., Bierwagen, Stacy, Birrell, Chico, Bonnema, Erika, Bown, Rosalind M.K., Brooks, Edward J., Brown, J.J., Buddo, Dayne, Burke, Patrick J., Cáceres, Camila, Cambra, Marta, Cardeñosa, Diego, Carrier, Jeffrey C., Casareto, Sara, Caselle, Jennifer E., Charloo, Venkatesh, Cinner, Joshua E., Claverie, Thomas, Clua, Eric E.G., Cochran, Jesse E.M., Cook, Neil, Cramp, Jessica E., d’Alberto, Brooke M., de Graaf, Martin, Dornhege, Mareike C., Espinoza, Mario, Estep, Andy, Fanovich, Lanya, Farabaugh, Naomi F., Fernando, Daniel, Ferreira, Carlos E.L., Fields, Candace Y.A., Flam, Anna L., Floros, Camilla, Fourqurean, Virginia, Gajdzik, Laura, García Barcia, Laura, Garla, Ricardo, Gastrich, Kirk, George, Lachlan, Giarrizzo, Tommaso, Graham, Rory, Guttridge, Tristan L., Hagan, Valerie, Hardenstine, Royale S., Heck, Stephen M., Henderson, Aaron C., Heithaus, Patricia, Hertler, Heidi, Hoyos Padilla, Mauricio, Hueter, Robert E., Jabado, Rima W., Joyeux, Jean-Christophe, Jaiteh, Vanessa, Johnson, Mohini, Jupiter, Stacy D., Kaimuddin, Muslimin, Kasana, Devanshi, Kelley, Megan, Kessel, Steven T., Kiilu, Benedict, Kirata, Taratau, Kuguru, Baraka, Kyne, Fabian, Langlois, Tim, Lara, Frida, Lawe, Jaedon, Lédée, Elodie J.I., Lindfield, Steve, Luna-Acosta, Andrea, Maggs, Jade Q., Manjaji-Matsumoto, B.M., Marshall, Andrea, Martin, Lucy, Mateos-Molina, Daniel, Matich, Philip, Mccombs, Erin, Mcivor, Ashlie, Mclean, Dianne, Meggs, Llewelyn, Moore, Stephen, Mukherji, Sushmita, Murray, Ryan, Newman, Stephen J., Nogués, Josep, Obota, Clay, Ochavillo, Domingo, O'Shea, Owen, Osuka, Kennedy E., Papastamatiou, Yannis P., Perera, Nishan, Peterson, Bradley, Pimentel, Caio R., Pina-Amargós, Fabián, Pinheiro, Hudson T., Ponzo, Alessandro, Prasetyo, Andhika, Quamar, L.M.S., Quinlan, Jessica R., Reis-Filho, José Amorim, Ruiz, Hector, Ruiz-Abierno, Alexei, Sala, Enric, Salinas-de-León, Pelayo, Samoilys, Melita A., Sample, William R., Schärer-Umpierre, Michelle, Schlaff, Audrey M., Schmid, Kurt, Schoen, Sara N., Simpson, Nikola, Smith, Adam N.H., Spaet, Julia L.Y., Sparks, Lauren, Stoffers, Twan, Tanna, Akshay, Torres, Rubén, Travers, Michael J., van Zinnicq Bergmann, Maurits, Vigliola, Laurent, Ward, Juney, Warren, Joseph D., Watts, Alexandra M., Wen, Colin K., Whitman, Elizabeth R., Wirsing, Aaron J., Wothke, Aljoscha, Zarza-González, Esteban, and Chapman, Demian D.

Abstract

A global survey of coral reefs reveals that overfishing is driving resident shark species toward extinction, causing diversity deficits in reef elasmobranch (shark and ray) assemblages. Our species-level analysis revealed global declines of 60 to 73% for five common resident reef shark species and that individual shark species were not detected at 34 to 47% of surveyed reefs. As reefs become more shark-depleted, rays begin to dominate assemblages. Shark-dominated assemblages persist in wealthy nations with strong governance and in highly protected areas, whereas poverty, weak governance, and a lack of shark management are associated with depauperate assemblages mainly composed of rays. Without action to address these diversity deficits, loss of ecological function and ecosystem services will increasingly affect human communities.

Published
2023

2. Widespread diversity deficits of coral reef sharks and rays

Author

Simpfendorfer, Colin A., Heithaus, Michael R., Heupel, Michelle R., Macneil, M.A., Meekan, Mark, Harvey, Euan, Sherman, C.S., Currey-Randall, Leanne M., Goetze, Jordan S., Kiszka, Jeremy J., Rees, Matthew J., Speed, Conrad W., Udyawer, Vinay, Bond, Mark E., Flowers, Kathryn I., Clementi, Gina M., Valentin-Albanese, Jasmine, Adam, M.S., Ali, Khadeeja, Asher, Jacob, Aylagas, Eva, Beaufort, Océane, Benjamin, Cecilie, Bernard, Anthony T.F., Berumen, Michael L., Bierwagen, Stacy, Birrell, Chico, Bonnema, Erika, Bown, Rosalind M.K., Brooks, Edward J., Brown, J.J., Buddo, Dayne, Burke, Patrick J., Cáceres, Camila, Cambra, Marta, Cardeñosa, Diego, Carrier, Jeffrey C., Casareto, Sara, Caselle, Jennifer E., Charloo, Venkatesh, Cinner, Joshua E., Claverie, Thomas, Clua, Eric E.G., Cochran, Jesse E.M., Cook, Neil, Cramp, Jessica E., d’Alberto, Brooke M., de Graaf, Martin, Dornhege, Mareike C., Espinoza, Mario, Estep, Andy, Fanovich, Lanya, Farabaugh, Naomi F., Fernando, Daniel, Ferreira, Carlos E.L., Fields, Candace Y.A., Flam, Anna L., Floros, Camilla, Fourqurean, Virginia, Gajdzik, Laura, García Barcia, Laura, Garla, Ricardo, Gastrich, Kirk, George, Lachlan, Giarrizzo, Tommaso, Graham, Rory, Guttridge, Tristan L., Hagan, Valerie, Hardenstine, Royale S., Heck, Stephen M., Henderson, Aaron C., Heithaus, Patricia, Hertler, Heidi, Hoyos Padilla, Mauricio, Hueter, Robert E., Jabado, Rima W., Joyeux, Jean-Christophe, Jaiteh, Vanessa, Johnson, Mohini, Jupiter, Stacy D., Kaimuddin, Muslimin, Kasana, Devanshi, Kelley, Megan, Kessel, Steven T., Kiilu, Benedict, Kirata, Taratau, Kuguru, Baraka, Kyne, Fabian, Langlois, Tim, Lara, Frida, Lawe, Jaedon, Lédée, Elodie J.I., Lindfield, Steve, Luna-Acosta, Andrea, Maggs, Jade Q., Manjaji-Matsumoto, B.M., Marshall, Andrea, Martin, Lucy, Mateos-Molina, Daniel, Matich, Philip, Mccombs, Erin, Mcivor, Ashlie, Mclean, Dianne, Meggs, Llewelyn, Moore, Stephen, Mukherji, Sushmita, Murray, Ryan, Newman, Stephen J., Nogués, Josep, Obota, Clay, Ochavillo, Domingo, O'Shea, Owen, Osuka, Kennedy E., Papastamatiou, Yannis P., Perera, Nishan, Peterson, Bradley, Pimentel, Caio R., Pina-Amargós, Fabián, Pinheiro, Hudson T., Ponzo, Alessandro, Prasetyo, Andhika, Quamar, L.M.S., Quinlan, Jessica R., Reis-Filho, José Amorim, Ruiz, Hector, Ruiz-Abierno, Alexei, Sala, Enric, Salinas-de-León, Pelayo, Samoilys, Melita A., Sample, William R., Schärer-Umpierre, Michelle, Schlaff, Audrey M., Schmid, Kurt, Schoen, Sara N., Simpson, Nikola, Smith, Adam N.H., Spaet, Julia L.Y., Sparks, Lauren, Stoffers, Twan, Tanna, Akshay, Torres, Rubén, Travers, Michael J., van Zinnicq Bergmann, Maurits, Vigliola, Laurent, Ward, Juney, Warren, Joseph D., Watts, Alexandra M., Wen, Colin K., Whitman, Elizabeth R., Wirsing, Aaron J., Wothke, Aljoscha, Zarza-González, Esteban, Chapman, Demian D., Simpfendorfer, Colin A., Heithaus, Michael R., Heupel, Michelle R., Macneil, M.A., Meekan, Mark, Harvey, Euan, Sherman, C.S., Currey-Randall, Leanne M., Goetze, Jordan S., Kiszka, Jeremy J., Rees, Matthew J., Speed, Conrad W., Udyawer, Vinay, Bond, Mark E., Flowers, Kathryn I., Clementi, Gina M., Valentin-Albanese, Jasmine, Adam, M.S., Ali, Khadeeja, Asher, Jacob, Aylagas, Eva, Beaufort, Océane, Benjamin, Cecilie, Bernard, Anthony T.F., Berumen, Michael L., Bierwagen, Stacy, Birrell, Chico, Bonnema, Erika, Bown, Rosalind M.K., Brooks, Edward J., Brown, J.J., Buddo, Dayne, Burke, Patrick J., Cáceres, Camila, Cambra, Marta, Cardeñosa, Diego, Carrier, Jeffrey C., Casareto, Sara, Caselle, Jennifer E., Charloo, Venkatesh, Cinner, Joshua E., Claverie, Thomas, Clua, Eric E.G., Cochran, Jesse E.M., Cook, Neil, Cramp, Jessica E., d’Alberto, Brooke M., de Graaf, Martin, Dornhege, Mareike C., Espinoza, Mario, Estep, Andy, Fanovich, Lanya, Farabaugh, Naomi F., Fernando, Daniel, Ferreira, Carlos E.L., Fields, Candace Y.A., Flam, Anna L., Floros, Camilla, Fourqurean, Virginia, Gajdzik, Laura, García Barcia, Laura, Garla, Ricardo, Gastrich, Kirk, George, Lachlan, Giarrizzo, Tommaso, Graham, Rory, Guttridge, Tristan L., Hagan, Valerie, Hardenstine, Royale S., Heck, Stephen M., Henderson, Aaron C., Heithaus, Patricia, Hertler, Heidi, Hoyos Padilla, Mauricio, Hueter, Robert E., Jabado, Rima W., Joyeux, Jean-Christophe, Jaiteh, Vanessa, Johnson, Mohini, Jupiter, Stacy D., Kaimuddin, Muslimin, Kasana, Devanshi, Kelley, Megan, Kessel, Steven T., Kiilu, Benedict, Kirata, Taratau, Kuguru, Baraka, Kyne, Fabian, Langlois, Tim, Lara, Frida, Lawe, Jaedon, Lédée, Elodie J.I., Lindfield, Steve, Luna-Acosta, Andrea, Maggs, Jade Q., Manjaji-Matsumoto, B.M., Marshall, Andrea, Martin, Lucy, Mateos-Molina, Daniel, Matich, Philip, Mccombs, Erin, Mcivor, Ashlie, Mclean, Dianne, Meggs, Llewelyn, Moore, Stephen, Mukherji, Sushmita, Murray, Ryan, Newman, Stephen J., Nogués, Josep, Obota, Clay, Ochavillo, Domingo, O'Shea, Owen, Osuka, Kennedy E., Papastamatiou, Yannis P., Perera, Nishan, Peterson, Bradley, Pimentel, Caio R., Pina-Amargós, Fabián, Pinheiro, Hudson T., Ponzo, Alessandro, Prasetyo, Andhika, Quamar, L.M.S., Quinlan, Jessica R., Reis-Filho, José Amorim, Ruiz, Hector, Ruiz-Abierno, Alexei, Sala, Enric, Salinas-de-León, Pelayo, Samoilys, Melita A., Sample, William R., Schärer-Umpierre, Michelle, Schlaff, Audrey M., Schmid, Kurt, Schoen, Sara N., Simpson, Nikola, Smith, Adam N.H., Spaet, Julia L.Y., Sparks, Lauren, Stoffers, Twan, Tanna, Akshay, Torres, Rubén, Travers, Michael J., van Zinnicq Bergmann, Maurits, Vigliola, Laurent, Ward, Juney, Warren, Joseph D., Watts, Alexandra M., Wen, Colin K., Whitman, Elizabeth R., Wirsing, Aaron J., Wothke, Aljoscha, Zarza-González, Esteban, and Chapman, Demian D.

Abstract

A global survey of coral reefs reveals that overfishing is driving resident shark species toward extinction, causing diversity deficits in reef elasmobranch (shark and ray) assemblages. Our species-level analysis revealed global declines of 60 to 73% for five common resident reef shark species and that individual shark species were not detected at 34 to 47% of surveyed reefs. As reefs become more shark-depleted, rays begin to dominate assemblages. Shark-dominated assemblages persist in wealthy nations with strong governance and in highly protected areas, whereas poverty, weak governance, and a lack of shark management are associated with depauperate assemblages mainly composed of rays. Without action to address these diversity deficits, loss of ecological function and ecosystem services will increasingly affect human communities., A global survey of coral reefs reveals that overfishing is driving resident shark species toward extinction, causing diversity deficits in reef elasmobranch (shark and ray) assemblages. Our species-level analysis revealed global declines of 60 to 73% for five common resident reef shark species and that individual shark species were not detected at 34 to 47% of surveyed reefs. As reefs become more shark-depleted, rays begin to dominate assemblages. Shark-dominated assemblages persist in wealthy nations with strong governance and in highly protected areas, whereas poverty, weak governance, and a lack of shark management are associated with depauperate assemblages mainly composed of rays. Without action to address these diversity deficits, loss of ecological function and ecosystem services will increasingly affect human communities.

Published
2023

3. Climate-assisted persistence of tropical fish vagrants in temperate marine ecosystems

Author

Gajdzik, Laura, DeCarlo, T.M., Koziol, Adam, Mousavi-Derazmahalleh, Mahsa, Coghlan, Megan, Power, Matthew, Bunce, Michael, Fairclough, D.V., Travers, M.J., Moore, G.I., Di Battista, Joseph, Gajdzik, Laura, DeCarlo, T.M., Koziol, Adam, Mousavi-Derazmahalleh, Mahsa, Coghlan, Megan, Power, Matthew, Bunce, Michael, Fairclough, D.V., Travers, M.J., Moore, G.I., and Di Battista, Joseph

Abstract

Rising temperatures and extreme climate events are propelling tropical species into temperate marine ecosystems, but not all species can persist. Here, we used the heatwave-driven expatriation of tropical Black Rabbitfish (Siganus fuscescens) to the temperate environments of Western Australia to assess the ecological and evolutionary mechanisms that may entail their persistence. Population genomic assays for this rabbitfish indicated little genetic differentiation between tropical residents and vagrants to temperate environments due to high migration rates, which were likely enhanced by the marine heatwave. DNA metabarcoding revealed a diverse diet for this species based on phytoplankton and algae, as well as an ability to feed on regional resources, including kelp. Irrespective of future climate scenarios, these macroalgae-consuming vagrants may self-recruit in temperate environments and further expand their geographic range by the year 2100. This expansion may compromise the health of the kelp forests that form Australia’s Great Southern Reef. Overall, our study demonstrates that projected favourable climate conditions, continued large-scale genetic connectivity between populations, and diet versatility are key for tropical range-shifting fish to establish in temperate ecosystems.

Published
2021

4. Climate-assisted persistence of tropical fish vagrants in temperate marine ecosystems

Author

Gajdzik, Laura, DeCarlo, Thomas M., Koziol, Adam, Mousavi-Derazmahalleh, Mahsa, Coghlan, Megan, Power, Matthew W., Bunce, Michael, Fairclough, David V., Travers, Michael J., Moore, Glenn I., DiBattista, Joseph D., Gajdzik, Laura, DeCarlo, Thomas M., Koziol, Adam, Mousavi-Derazmahalleh, Mahsa, Coghlan, Megan, Power, Matthew W., Bunce, Michael, Fairclough, David V., Travers, Michael J., Moore, Glenn I., and DiBattista, Joseph D.

Abstract

Rising temperatures and extreme climate events are propelling tropical species into temperate marine ecosystems, but not all species can persist. Here, we used the heatwave-driven expatriation of tropical Black Rabbitfish (Siganus fuscescens) to the temperate environments of Western Australia to assess the ecological and evolutionary mechanisms that may entail their persistence. Population genomic assays for this rabbitfish indicated little genetic differentiation between tropical residents and vagrants to temperate environments due to high migration rates, which were likely enhanced by the marine heatwave. DNA metabarcoding revealed a diverse diet for this species based on phytoplankton and algae, as well as an ability to feed on regional resources, including kelp. Irrespective of future climate scenarios, these macroalgae-consuming vagrants may self-recruit in temperate environments and further expand their geographic range by the year 2100. This expansion may compromise the health of the kelp forests that form Australia’s Great Southern Reef. Overall, our study demonstrates that projected favourable climate conditions, continued large-scale genetic connectivity between populations, and diet versatility are key for tropical range-shifting fish to establish in temperate ecosystems.

Published
2021

5. Climate-assisted persistence of tropical fish vagrants in temperate marine ecosystems

Author

Gajdzik, Laura, DeCarlo, Thomas M., Koziol, Adam, Mousavi-Derazmahalleh, Mahsa, Coghlan, Megan, Power, Matthew W., Bunce, Michael, Fairclough, David V., Travers, Michael J., Moore, Glenn I., DiBattista, Joseph D., Gajdzik, Laura, DeCarlo, Thomas M., Koziol, Adam, Mousavi-Derazmahalleh, Mahsa, Coghlan, Megan, Power, Matthew W., Bunce, Michael, Fairclough, David V., Travers, Michael J., Moore, Glenn I., and DiBattista, Joseph D.

Abstract

Rising temperatures and extreme climate events are propelling tropical species into temperate marine ecosystems, but not all species can persist. Here, we used the heatwave-driven expatriation of tropical Black Rabbitfish (Siganus fuscescens) to the temperate environments of Western Australia to assess the ecological and evolutionary mechanisms that may entail their persistence. Population genomic assays for this rabbitfish indicated little genetic differentiation between tropical residents and vagrants to temperate environments due to high migration rates, which were likely enhanced by the marine heatwave. DNA metabarcoding revealed a diverse diet for this species based on phytoplankton and algae, as well as an ability to feed on regional resources, including kelp. Irrespective of future climate scenarios, these macroalgae-consuming vagrants may self-recruit in temperate environments and further expand their geographic range by the year 2100. This expansion may compromise the health of the kelp forests that form Australia’s Great Southern Reef. Overall, our study demonstrates that projected favourable climate conditions, continued large-scale genetic connectivity between populations, and diet versatility are key for tropical range-shifting fish to establish in temperate ecosystems.

Published
2021

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