Spatial valuation of California marine fisheries as an ecosystem service

Miller, Rebecca R.; Field, John C.; Santora, Jarrod A.; Monk, Melissa; Kosaka, Rosemary; Thomson, Cynthia J.

doi:10.1139/cjfas-2016-0228

Cited by 20 publications

(32 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This was followed by the increase and decline in the commercial California sheephead fishery and a recent establishment of a fishery for the warty sea cucumber. These results are consistent with more historical studies that demonstrate shifts in species targeted by commercial fishers over time (Miller et al., ). By contrast, recreational CPFV overall harvest showed a consistent decline in harvest over the 30‐year period (Figure b), driven by the steady decline in multiple species (Figure d,e), a pattern described previously (Bellquist & Semmens, ; Erisman et al., ).…”

Section: Discussionsupporting

confidence: 91%

“…Although spatiotemporal harvest patterns have been evaluated in numerous marine ecosystems (Gerritsen & Lordan, ; Halpern et al., ; Jalali et al., ; Stewart et al., ), and even for some species within the SCB (Miller et al., , ), there has been no comprehensive analysis of the spatial and temporal patterns of harvest across all commercially and recreationally important species in the SCB simultaneously. It remains unclear the extent to which these patterns hold in a region with such intense fishing pressure.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Long‐term, spatial marine harvest intensity as an indicator of human impact on shallow rocky reef ecosystems

et al. 2018

View full text Add to dashboard Cite

As human activities continue to expand globally, there will be increased need to incorporate the impacts of these activities into ecological studies for a holistic understanding of ecosystems. Within the Southern California Bight, as in other highly productive marine ecosystems, fishing has long contributed to the ecology and evolution of marine fish and invertebrate communities. As fishing varies across space and over time, there is a need for a reliable metric that quantifies the spatiotemporal variation in the impact of fishing. Here, we quantify an index of harvest intensity on the highly productive and heavily fished, shallow rocky reefs of Southern California. To this end, we take advantage of two long-term, spatially explicit, multi-species datasets collected by the California Department of Fish and Wildlife on commercial and recreational marine harvest, combined with reef-species survey data and a geospatial reef data layer.Using this approach, we recover predictable patterns for harvest intensity across the Southern California Bight, with harvest intensity decreasing in fishing blocks located at greater distances from the nearest port. Further, our results indicate an important interaction effect between distance to nearest port and year on harvest intensity, suggesting there are important shifts in spatiotemporal patterns over the 30-year time period. As fishing can have numerous impacts on ecological and evolutionary processes, the observed spatiotemporal variation in harvest intensity illustrates the need for incorporating the contribution of human impacts into marine ecosystem studies.

show abstract

Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Long‐term, spatial marine harvest intensity as an indicator of human impact on shallow rocky reef ecosystems

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The impacts of the MHW were wide ranging 9,10 , but notably caused a sustained bloom of toxic Pseudo-nitzschia diatoms that led to the persistence of domoic acid (a neurotoxin impacting marine wildlife; e.g., shellfish poisoning 10,[26][27][28] , record changes in biodiversity of pelagic species 29 , and an unprecedented delay in the opening of the commercial Dungeness crab (Metacarcinus magister) fishery in California (a fixed-gear trap fishery with vertical lines 6 ). The crab fishery, which in recent decades has been among the largest by both volume and value in California [30][31][32] , normally opens in November and continues through mid-July, with catches peaking shortly after the initial opening and tapering to low levels throughout spring and early summer. However, high toxin concentrations during the 2015- 16 fishing season led to the fishery opening being delayed until late March 2016.…”

mentioning

confidence: 99%

Habitat compression and ecosystem shifts as potential links between marine heatwave and record whale entanglements

et al. 2020

Self Cite

View full text Add to dashboard Cite

Climate change and increased variability and intensity of climate events, in combination with recovering protected species populations and highly capitalized fisheries, are posing new challenges for fisheries management. We examine socio-ecological features of the unprecedented 2014-2016 northeast Pacific marine heatwave to understand the potential causes for record numbers of whale entanglements in the central California Current crab fishery. We observed habitat compression of coastal upwelling, changes in availability of forage species (krill and anchovy), and shoreward distribution shift of foraging whales. We propose that these ecosystem changes, combined with recovering whale populations, contributed to the exacerbation of entanglements throughout the marine heatwave. In 2016, domoic acid contamination prompted an unprecedented delay in the opening of California's Dungeness crab fishery that inadvertently intensified the spatial overlap between whales and crab fishery gear. We present a retroactive assessment of entanglements to demonstrate that cooperation of fishers, resource managers, and scientists could mitigate future entanglement risk by developing climate-ready fisheries approaches, while supporting thriving fishing communities.

show abstract

“…Molluscs are particularly poorly represented; over 40% of global landings are resolved only to family level or broader, and only 12% of the species explicitly identified in landings have data assessments in either RAM and IUCN databases. Given the growing proportion of global landings invertebrates represent, and their importance for human livelihoods, and ecosystem function, these are concerning voids in our knowledge of aquatic foods (Berkes et al, 2006;Anderson et al, 2011;Eddy et al, 2015;Miller et al, 2017). Historic overharvesting of oysters in Chesapeake Bay contributed to increased eutrophication and hypoxia (i.e., low dissolved oxygen), leading to declines in other local fisheries and wildlife (e.g., rays, sharks, river otters) (Jackson, 2001;Randall, 2003), providing a stark example of how overexploitation of important invertebrates can influence the wider ecosystem function and diversity.…”

Section: Discussionmentioning

confidence: 99%

Substantial Gaps in the Current Fisheries Data Landscape

et al. 2020

View full text Add to dashboard Cite

Effective management of aquatic resources, wild and farmed, has implications for the livelihoods of dependent communities, food security, and ecosystem health. Good management requires information on the status of harvested species, yet many gaps remain in our understanding of these species and systems, in particular the lack of taxonomic resolution of harvested species. To assess these gaps we compared the occurrence of landed species (freshwater and marine) from the United Nations Food and Agriculture Organization (FAO) global fisheries production database to those in the International Union for Conservation of Nature (IUCN) Red List and the RAM Legacy Stock Assessment Database, some of the largest and most comprehensive global datasets of consumed aquatic species. We also quantified the level of resolution and trends in taxonomic reporting for all landed taxa in the FAO database. Of the 1,695 consumed aquatic species or groups in the FAO database considered in this analysis, a large portion (35%) are missing from both of the other two global datasets, either IUCN or RAM, used to monitor, manage, and protect aquatic resources. Only a small number of all fished taxa reported in FAO data (150 out of 1,695; 9%) have both a stock assessment in RAM and a conservation assessment in IUCN. Furthermore, 40% of wild caught landings are not reported to the species level, limiting our ability to effectively account for the environmental impacts of wild harvest. Landings of invertebrates (44%) and landings in Asia (>75%) accounted for the majority of harvest without species specific information in 2018. Assessing the overlap of species which are both farmed and fished to broadly map possible interactions – which can help or hinder wild populations - we found 296 species, accounting for 12% of total wild landings globally, and 103 countries and territories that have overlap in the species caught in the wild and produced through aquaculture. In all, our work highlights that while fisheries management is improving in many areas there remain key gaps in data resolution that are critical for fisheries assessments and conservation of aquatic systems into the future.

show abstract

Spatial valuation of California marine fisheries as an ecosystem service

Cited by 20 publications

References 44 publications

Long‐term, spatial marine harvest intensity as an indicator of human impact on shallow rocky reef ecosystems

Long‐term, spatial marine harvest intensity as an indicator of human impact on shallow rocky reef ecosystems

Habitat compression and ecosystem shifts as potential links between marine heatwave and record whale entanglements

Substantial Gaps in the Current Fisheries Data Landscape

Contact Info

Product

Resources

About