Fishers Knowledge and fish extinction Research Papers (original) (raw)

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- Conservation Biology, Conservation, Fisheries, Life history

In the Philippines, very high fishing pressure coincides with the globally greatest number of shorefish species, yet no long-term fisheries data are available to explore species-level changes that may have occurred widely in the most species rich and vulnerable marine ecosystem, namely coral reefs. Through 2655 face-to-face interviews conducted between August 2012 and July 2014, we used fishers' recall of past catch rates of reef-associated finfish to infer species disappearances from catches in five marine key biodiversity areas (Lanuza Bay, Danajon Bank, Verde Island Passage, Polillo Islands and Honda Bay). We modeled temporal trends in perceived catch per unit effort (CPUE) based on fishers' reports of typical good days' catches using Generalized Linear Mixed Modelling. Fifty-nine different finfish disappeared from catches between the 1950s and 2014; 42 fish were identified to species level, two to genus, seven to family and eight to local name only. Five species occurring at all sites with the greatest number of fishers reporting zero catches were the green bumphead parrotfish (Bolbometopon muricatum), humphead wrasse (Cheilinus undulatus), African pompano (Alectis ciliaris), giant grouper (Epinephelus lanceolatus) and mangrove red snapper (Lutjanus argentimaculatus). Between the 1950s and 2014, the mean perceived CPUE of bumphead parrotfish declined by 88%, that of humphead wrasse by 82%, African pompano by 66%, giant grouper by 74% and mangrove red snap-per by 64%. These declines were mainly associated with excess and uncontrolled fishing, fish life-history traits like maximum body size and socioeconomic factors like access to market infrastructure and services, and overpopulation. The fishers' knowledge is indicative of extirpations where evidence for these losses was otherwise lacking. Our models provide information as basis for area-based conservation and regional resource

- by Erina Pauline Molina and +1
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- Small scale fisheries, Coral Reef Fishes, Mixed Effects Models, Fishers Knowledge and fish extinction

This study was conducted among the residing fishermen of the Shari-Goyain River, Bangladesh toassess the socio-demographic status. The highest percentage (46.25%) of the fishermen belonged to middleage group, and 68.75% were Muslim. Among the respondents 61.25% had nuclear family, 17.50% had noeducation, 72.50% had access to drinking water from tube-wells and 71.25% lived in earthen houses. Around93.75% fishermen had homestead land, 56.25% borrowed money from non-government organizations,75.00% fishermen got Vulnerable Group Feeding (VGF) card from the government. The result of this studyshows poor livelihood status of the fishermen with a number of constraints for fishing. To improve thefisheries resources and livelihood status of the fishermen credit facilities and alternative livelihoodopportunities should be ensured.

This study was conducted among the residing fishermen of the Shari-Goyain River, Bangladesh to assess the socio-demographic status. The highest percentage (46.25%) of the fishermen belonged to middle age group, and 68.75% were Muslim. Among the respondents 61.25% had nuclear family, 17.50% had no education, 72.50% had access to drinking water from tube-wells and 71.25% lived in earthen houses. Around 93.75% fishermen had homestead land, 56.25% borrowed money from non-government organizations, 75.00% fishermen got Vulnerable Group Feeding (VGF) card from the government. The result of this study shows poor livelihood status of the fishermen with a number of constraints for fishing. To improve the fisheries resources and livelihood status of the fishermen credit facilities and alternative livelihood opportunities should be ensured.

- by Debasish Pandit and +3
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- Climate Change Impacts, Heavy Metal Pollution, Fishers Knowledge and fish extinction

The report is an outcome of a study jointly conducted by Tata Centre for Development (TCD) at UChicago and NCAER under Water-To-Cloud (W2C) Thoreau project.
The study conducted in two phases entails conduction of water experiments using sensors (internet of things approach), along with in-person interviews and Focus Group Discussions (FGDs) of fishers in the two states of Uttar Pradesh and West Bengal.
This report makes several recommendations based on the findings of the study. While there is a need to formally recognise the communities settled on the river banks as part of the riverine ecosystem, it is also important to synchronise their local ecological knowledge with scientific knowledge for implementing better water monitoring techniques.

- by Nicholas Polunin
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- Conservation Biology, Conservation, Fisheries, Traditional Ecological Knowledge

SUMMARYLittle is known about local extinctions of finfish species in the most biodiverse marine ecosystem in the most marine biodiverse and anthropogenically threatened region on Earth. This paper examines coral reef associated finfish species that disappeared in the catches around the island of Bohol over the period 1950 to 2007, based on the only available data, namely traditional ecological knowledge. Generalized least squares (GLS) tests showed steep declines to zero among species formerly recorded in catches. Finfish species recommended as priority for further monitoring based on life history and disappearances in fish catch are giant grouper (Epinephelus lanceolatus) and African pompano (Alectis ciliaris). Twenty out of the 21 species that disappeared from catches were moderate to very large-bodied, six were slow-growing fish and four were late-maturing fish. Species of large body size and subject to high fishing pressure may be particularly vulnerable. Traditional ecological ...

- by Nicholas Polunin
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- Conservation Biology, Conservation, Fisheries, Traditional Ecological Knowledge

Little is known about local extinctions of finfish species in the most biodiverse marine ecosystem in the most marine biodiverse and anthropogenically threatened region on Earth. This paper examines coral reef associated finfish species that disappeared in the catches around the island of Bohol over the period 1950 to 2007, based on the only available data, namely traditional ecological knowledge. Generalized least squares (GLS) tests showed steep declines to zero among species formerly recorded in catches. Finfish species recommended as priority for further monitoring based on life history and disappearances in fish catch are giant grouper (Epinephelus lanceolatus) and African pompano (Alectis ciliaris). Twenty out of the 21 species that disappeared from catches were moderate to very large-bodied, six were slowgrowing fish and four were late-maturing fish. Species of large body size and subject to high fishing pressure may be particularly vulnerable. Traditional ecological knowledge when applied to population dynamics studies can add value to development of new monitoring methods. This knowledge can moreover inform the prioritization of species for fisheries assessment and conservation action.

- by Jesrey Dongallo
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- Conservation Biology, Conservation, Fisheries, Traditional Ecological Knowledge

- by Nicholas Polunin
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- Fisheries, Coral Reefs, Biodiversity, Endangered Species