Virgin Islands National Park: Coral Reef: Population Dynamics: Diadema antillarum
A potential consequence of individuals compensating for density-dependent processes is that rare or infrequent events can produce profound and long-term shifts in species abundance. In 1983–1984 a mass mortality event reduced the numbers of the abundant sea urchin Diadema antillarum by 95–99% throug...
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2020
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dataone:https://pasta.lternet.edu/package/metadata/eml/edi/299/1 2024-06-03T18:47:06+00:00 Virgin Islands National Park: Coral Reef: Population Dynamics: Diadema antillarum California State University Northridge Peter Edmunds St. John, US Virgin Islands Yawzi (long term photoquadrats) Tektite (long term photoquadrats) Yawzi Point (Recruit) Donkey Bite as in Levitan 1988, JEMBE (DOBI) Tektite Cliffs as in Levitan 1988, JEMBE (TECL) Tektite Random (Site 6) East Tektite Europa (Site 11) Northeast Little Lameshure Bay as in Levitan 1988, JEMBE (NELL) West Little Lameshure Bay (Site 9) West Little Lameshure Bay as in Levitan 1988, JEMBE (WELL) White Point (Site 15) Cabritte (Site 2) Neptune's Table (Site 5) Squid Site as in Levitan 1988, JEMBE (SQST) ENVELOPE(-64.73,-64.72,18.317,18.307) BEGINDATE: 1987-12-01T00:00:00Z ENDDATE: 2014-08-01T00:00:00Z 2020-03-15T00:00:00Z https://pasta.lternet.edu/package/metadata/eml/edi/299/1 unknown Environmental Data Initiative USVI VINP LTREB CSUN US Virgin Islands National Park St. John Island Caribbean California State University Northridge NSF Scleractinia Scleractinian Coral Community Demographics Corals Populations Carbonate rocks Coral Reefs Fringing Reefs Shallow water Marine environments Polyps (organisms) Ocean Acidification Reef Resistance and Resilience Population and Community Dynamics Diadema Diadema antillarum Diadema antillarum Dataset 2020 dataone:urn:node:EDI 2024-06-03T18:16:15Z A potential consequence of individuals compensating for density-dependent processes is that rare or infrequent events can produce profound and long-term shifts in species abundance. In 1983–1984 a mass mortality event reduced the numbers of the abundant sea urchin Diadema antillarum by 95–99% throughout the caribbean and western atlantic. Following this event, the abundance of macroalgae increased and the few surviving D. antillarum responded by increasing in body size and fecundity. these initial observations suggested that populations of D. antillarum could recover rapidly following release from food limitation. In contrast, published studies of field manipulations indicate that this species had traits making it resistant to density-dependent effects on offspring production and adult mortality; this evidence raises the possibility that density-independent processes might keep populations at a diminished level. Decadal scale (1983–2011) monitoring of recruitment, mortality, population density and size structure of D. antillarum from st John, us Virgin Islands, indicates that population density has remained relatively stable and more than an order of magnitude lower than that before the mortality event of 1983–1984. We detected no evidence of density-dependent mortality or recruitment since this mortality event. In this location, model estimates of equilibrium population density, assuming density-independent processes and based on parameters generated over the first decade following the mortality event, accurately predict the low population density 20 years later (2011). We find no evidence to support the notion that this historically dominant species will rebound from this temporally brief, but spatially widespread, perturbation. Dataset Ocean acidification Environmental Data Initiative (via DataONE) White Point ENVELOPE(-56.582,-56.582,49.833,49.833) ENVELOPE(-64.73,-64.72,18.317,18.307) |
institution |
Open Polar |
collection |
Environmental Data Initiative (via DataONE) |
op_collection_id |
dataone:urn:node:EDI |
language |
unknown |
topic |
USVI VINP LTREB CSUN US Virgin Islands National Park St. John Island Caribbean California State University Northridge NSF Scleractinia Scleractinian Coral Community Demographics Corals Populations Carbonate rocks Coral Reefs Fringing Reefs Shallow water Marine environments Polyps (organisms) Ocean Acidification Reef Resistance and Resilience Population and Community Dynamics Diadema Diadema antillarum Diadema antillarum |
spellingShingle |
USVI VINP LTREB CSUN US Virgin Islands National Park St. John Island Caribbean California State University Northridge NSF Scleractinia Scleractinian Coral Community Demographics Corals Populations Carbonate rocks Coral Reefs Fringing Reefs Shallow water Marine environments Polyps (organisms) Ocean Acidification Reef Resistance and Resilience Population and Community Dynamics Diadema Diadema antillarum Diadema antillarum California State University Northridge Peter Edmunds Virgin Islands National Park: Coral Reef: Population Dynamics: Diadema antillarum |
topic_facet |
USVI VINP LTREB CSUN US Virgin Islands National Park St. John Island Caribbean California State University Northridge NSF Scleractinia Scleractinian Coral Community Demographics Corals Populations Carbonate rocks Coral Reefs Fringing Reefs Shallow water Marine environments Polyps (organisms) Ocean Acidification Reef Resistance and Resilience Population and Community Dynamics Diadema Diadema antillarum Diadema antillarum |
description |
A potential consequence of individuals compensating for density-dependent processes is that rare or infrequent events can produce profound and long-term shifts in species abundance. In 1983–1984 a mass mortality event reduced the numbers of the abundant sea urchin Diadema antillarum by 95–99% throughout the caribbean and western atlantic. Following this event, the abundance of macroalgae increased and the few surviving D. antillarum responded by increasing in body size and fecundity. these initial observations suggested that populations of D. antillarum could recover rapidly following release from food limitation. In contrast, published studies of field manipulations indicate that this species had traits making it resistant to density-dependent effects on offspring production and adult mortality; this evidence raises the possibility that density-independent processes might keep populations at a diminished level. Decadal scale (1983–2011) monitoring of recruitment, mortality, population density and size structure of D. antillarum from st John, us Virgin Islands, indicates that population density has remained relatively stable and more than an order of magnitude lower than that before the mortality event of 1983–1984. We detected no evidence of density-dependent mortality or recruitment since this mortality event. In this location, model estimates of equilibrium population density, assuming density-independent processes and based on parameters generated over the first decade following the mortality event, accurately predict the low population density 20 years later (2011). We find no evidence to support the notion that this historically dominant species will rebound from this temporally brief, but spatially widespread, perturbation. |
format |
Dataset |
author |
California State University Northridge Peter Edmunds |
author_facet |
California State University Northridge Peter Edmunds |
author_sort |
California State University Northridge |
title |
Virgin Islands National Park: Coral Reef: Population Dynamics: Diadema antillarum |
title_short |
Virgin Islands National Park: Coral Reef: Population Dynamics: Diadema antillarum |
title_full |
Virgin Islands National Park: Coral Reef: Population Dynamics: Diadema antillarum |
title_fullStr |
Virgin Islands National Park: Coral Reef: Population Dynamics: Diadema antillarum |
title_full_unstemmed |
Virgin Islands National Park: Coral Reef: Population Dynamics: Diadema antillarum |
title_sort |
virgin islands national park: coral reef: population dynamics: diadema antillarum |
publisher |
Environmental Data Initiative |
publishDate |
2020 |
url |
https://pasta.lternet.edu/package/metadata/eml/edi/299/1 |
op_coverage |
St. John, US Virgin Islands Yawzi (long term photoquadrats) Tektite (long term photoquadrats) Yawzi Point (Recruit) Donkey Bite as in Levitan 1988, JEMBE (DOBI) Tektite Cliffs as in Levitan 1988, JEMBE (TECL) Tektite Random (Site 6) East Tektite Europa (Site 11) Northeast Little Lameshure Bay as in Levitan 1988, JEMBE (NELL) West Little Lameshure Bay (Site 9) West Little Lameshure Bay as in Levitan 1988, JEMBE (WELL) White Point (Site 15) Cabritte (Site 2) Neptune's Table (Site 5) Squid Site as in Levitan 1988, JEMBE (SQST) ENVELOPE(-64.73,-64.72,18.317,18.307) BEGINDATE: 1987-12-01T00:00:00Z ENDDATE: 2014-08-01T00:00:00Z |
long_lat |
ENVELOPE(-56.582,-56.582,49.833,49.833) ENVELOPE(-64.73,-64.72,18.317,18.307) |
geographic |
White Point |
geographic_facet |
White Point |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
_version_ |
1800876049111711744 |