Persistence of trophic hotspots and relation to human impacts within an upwelling marine ecosystem. Santora, J. A., Sydeman, W. J., Schroeder, I. D., Field, J. C., Miller, R. R., & Wells, B. K. Ecological Applications, 27(2):560–574, 2017. ![Persistence of trophic hotspots and relation to human impacts within an upwelling marine ecosystem [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Human impacts (e.g., fishing, pollution, and shipping) on pelagic ecosystems are increasing, causing concerns about stresses on marine food webs. Maintaining predator-prey relationships through protection of pelagic hotspots is crucial for conservation and management of living marine resources. Biotic components of pelagic, plankton-based, ecosystems exhibit high variability in abundance in time and space (i.e., extreme patchiness), requiring investigation of persistence of abundance across trophic levels to resolve trophic hotspots. Using a 26-yr record of indicators for primary production, secondary (zooplankton and larval fish), and tertiary (seabirds) consumers, we show distributions of trophic hotspots in the southern California Current Ecosystem result from interactions between a strong upwelling center and a productive retention zone with enhanced nutrients, which concentrate prey and predators across multiple trophic levels. Trophic hotspots also overlap with human impacts, including fisheries extraction of coastal pelagic and groundfish species, as well as intense commercial shipping traffic. Spatial overlap of trophic hotspots with fisheries and shipping increases vulnerability of the ecosystem to localized depletion of forage fish, ship strikes on marine mammals, and pollution. This study represents a critical step toward resolving pelagic areas of high conservation interest for planktonic ecosystems and may serve as a model for other ocean regions where ecosystem-based management and marine spatial planning of pelagic ecosystems is warranted.
@article{santora_persistence_2017,
title = {Persistence of trophic hotspots and relation to human impacts within an upwelling marine ecosystem},
volume = {27},
issn = {1051-0761},
shorttitle = {Persistence of trophic hotspots and relation to human impacts within an upwelling marine ecosystem},
url = {://WOS:000395634300019},
doi = {10.1002/eap.1466},
abstract = {Human impacts (e.g., fishing, pollution, and shipping) on pelagic ecosystems are increasing, causing concerns about stresses on marine food webs. Maintaining predator-prey relationships through protection of pelagic hotspots is crucial for conservation and management of living marine resources. Biotic components of pelagic, plankton-based, ecosystems exhibit high variability in abundance in time and space (i.e., extreme patchiness), requiring investigation of persistence of abundance across trophic levels to resolve trophic hotspots. Using a 26-yr record of indicators for primary production, secondary (zooplankton and larval fish), and tertiary (seabirds) consumers, we show distributions of trophic hotspots in the southern California Current Ecosystem result from interactions between a strong upwelling center and a productive retention zone with enhanced nutrients, which concentrate prey and predators across multiple trophic levels. Trophic hotspots also overlap with human impacts, including fisheries extraction of coastal pelagic and groundfish species, as well as intense commercial shipping traffic. Spatial overlap of trophic hotspots with fisheries and shipping increases vulnerability of the ecosystem to localized depletion of forage fish, ship strikes on marine mammals, and pollution. This study represents a critical step toward resolving pelagic areas of high conservation interest for planktonic ecosystems and may serve as a model for other ocean regions where ecosystem-based management and marine spatial planning of pelagic ecosystems is warranted.},
language = {English},
number = {2},
journal = {Ecological Applications},
author = {Santora, J. A. and Sydeman, W. J. and Schroeder, I. D. and Field, J. C. and Miller, R. R. and Wells, B. K.},
year = {2017},
keywords = {Environmental Sciences \& Ecology, anchovy, biological hotspots, california, climate-change, cumulative human impacts, current system, dynamic ocean, fisheries, fisheries management, food web, krill, nearshore retention, northern, oil, primary productivity, protected areas, retention, sardine, seabirds, shipping, southern california current, spatial management, upwelling},
pages = {560--574}
}
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