The Impact of Global Change on the Dynamics of Marine Living Resources

Gros, Philippe; Prouzet, Patrick

doi:10.1002/9781119007708.ch4

Cited by 3 publications

(2 citation statements)

References 123 publications

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“…Dams and weirs are not the only factors affecting eel habitats: Rivers provide multiple goods and services to society (Elliott & Whitfield, ; Postel & Richter, ; Wolanski, McLusky, van den Belt, & Costanza, ) that have led to river channelization, hydromorphological modifications, drying out of lateral wetland, wetland drainage, water extraction, modification of land use in the floodplain that can lead to higher erosion and sedimentation (Basset et al., ; Elliott & Hemingway, ; Postel & Richter, ). As an example, typical eel habitats, such as estuarine marshes and intertidal zones, have been lost because of flood protection walls, agriculture activities and navigation (Gros & Prouzet, ). In Japan, catch reduction rates in several rivers and lakes were positively correlated with the rate of revetment along rivers and around lakes (Itakura, Kitagawa, Miller, & Kimura, ), and also, the condition factor of eels and prey diversity were significantly lower in these modified habitats (Itakura, Kaino, Miyake, Kitagawa, & Kimura, ).…”

Section: Component 3—fragmentation and Habitat Loss: Fragmentation Bymentioning

confidence: 99%

“…Another component is the modification of habitats due to anthropogenic land use, which can lead to fragmentation of aquatic and terrestrial ecosystems or even habitat loss (Brook, Sodhi, & Bradshaw, ; Collinge, ; Fischer & Lindenmayer, ). Habitat loss and ecosystem fragmentation are currently considered major threats to biodiversity and represent one of the major challenges in ecosystem conservation and restoration (Sutherland et al., ; Tilman, May, Lehman, & Nowak, ; Tischendorf & Fahrig, , ), by impairing the ability of individuals to migrate to essential habitats (Gros & Prouzet, ), by isolating populations and reducing gene flow (Haxton & Cano, ; Horreo et al., ), and by modifying species community structure (Perkin & Gido, ). Fragmentation and habitat loss increase the risk of extinction cascades (Fischer & Lindenmayer, ; Haddad et al., ; Junge, Museth, Hindar, Kraabøl, & Vøllestad, ; Krauss et al., ; van Leeuwen, Museth, Sandlund, Qvenild, & Vøllestad, ; Terborgh et al., ).…”

Section: Introductionmentioning

confidence: 99%

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Freshwater eels: A symbol of the effects of global change

Drouineau

Durif

Castonguay³

et al. 2018

Fish and Fisheries

117

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Temperate eels Anguilla anguilla (European eel), A. rostrata (American eel) and A. japonica (Japanese eel) are three catadromous species which have been declining since the 1970s/1980s despite their remarkable adaptive capacity. Because of their specific life cycles, which share distant oceanic spawning grounds and continental growth stage, eels are affected by five components of the global change: (a) climate change affecting larval survival and drift, (b) an increase in pollution leading to high levels of contamination exacerbated by their high lipid levels, (c) increasing fragmentation and habitat loss that reduce dramatically the amount of available habitats and induce increased spawner mortality, (d) the appearance of Anguillicola crassus a parasitic alien nematode that impairs spawning success, and (e) the impact of commercial and recreational fisheries for all life stages of eel. In this context, the rapid increases of pressures during the “Great Acceleration” have surpassed the adaptive capacity of eels. This illustrates that cumulative effects of global change can lead to the collapse of species, even in species that have amazingly high adaptive capacities.

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Section: Component 3—fragmentation and Habitat Loss: Fragmentation Bymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Freshwater eels: A symbol of the effects of global change

Drouineau

Durif

Castonguay³

et al. 2018

Fish and Fisheries

117

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Management and Sustainable Exploitation of Marine Living Resources

Monaco¹,

Prouzet²

2015

Governance of Seas and Oceans

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Management of the Marine Environment: Transdisciplinary and Systemic Approach

Prouzet¹,

Monaco

Sébastien³

2019

Encyclopedia of Water

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Since the beginning of the twentieth century, observations have shown a significant degradation of aquatic environments. This degradation has got worse in the past century in all regions of the Globe. This is observed in many estuarine areas vital for the growth of high‐value species. Given the state of degradation of these coastal environments, their vulnerability to the anthropic effects and the natural hazards has become stronger whereas their resilience capacities have become significantly lower. The same goes for the many human communities living from the exploitation of living resources that can no longer ensure the sustainability of their fishing or farming activities. In addition to all these modifications the impacts, now proven, of climate change alter the temperature of water masses and biogeochemical characteristics of marine ecosystems. This integrated vision of the marine environment and of the aims of research makes it possible to address the issue of environmental governance and the problems involved in coordinating the knowledge and functions of scientific, social, economic and political actors. The three authors who are specialized in different fields of research exchange their points of view, redefine the terms, notions, concepts, and the questions related to the exercise of transdisciplinarity.

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The Impact of Global Change on the Dynamics of Marine Living Resources

Cited by 3 publications

References 123 publications

Freshwater eels: A symbol of the effects of global change

Freshwater eels: A symbol of the effects of global change

Management and Sustainable Exploitation of Marine Living Resources

Management of the Marine Environment: Transdisciplinary and Systemic Approach

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