Introduction: the coastal ecosystem complex as a unit of structure and function of biological productivity in coastal areas

Watanabe, Yoshirô; Kawamura, Tomohiko; Yamashita, Yoh

doi:10.1007/s12562-018-1176-7

Cited by 29 publications

(6 citation statements)

References 15 publications

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“…Charybdis (Charybdis) japonica and Pu. quadridens, in particular, were the seagrass-dependent crab species in northwestern Pacific regions [61,62]. The above taxonomical groups, therefore, show common decapods inhabiting seagrass beds of temperate Pacific regions, regardless of locations.…”

Section: Discussionmentioning

confidence: 85%

Crustacean Decapod Assemblage Associated with Seagrass (Zostera marina) Beds in Southern Waters of Korea

Park

Kwak

Riedel³

2020

Diversity

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Decapod assemblages in Zostera marina beds from two bays adjacent to unvegetated habitats were investigated to assess their influence on decapod assemblages. Thirty-eight decapod species belonging to four taxa were collected using a small beam trawl at four habitat types from two different locations off the coast of Namhae Island, South Korea. Dominant decapod taxon at all habitats was the caridean shrimps, with Eualus leptognathus, Heptacarpus pandaloides, Latreutes anoplonyx, La. Laminirostris, and Palaemon macrodactylus being the most abundant caridean species. Crabs were characterized with the highest biomass, but with moderate species richness and abundance. Penaeoid and sergestoid shrimps only accounted for <1% of the total decapod abundance. The number of species and their abundance of decapod assemblages varied greatly by habitat type, season, and diel patterns, but not diversity. Species number and abundance peaked in seagrass beds of southern exposed bays during the autumn and were lowest in unvegetated habitats during the summer months. Diel decapod catch rates were higher at night. Dense seagrass vegetation and nighttime supported higher decapod mean densities, but not species richness and diversity. Multivariate analyses revealed that habitat type and season significantly affected the structure of decapod assemblages, but diel patterns had a minor influence. Among decapod species, Pa. macrodactylus and Pugettia quadridens characterized the decapod assemblages in seagrass beds at the northern semi-closed bay, while Telmessus acutidens, Crangon affinis, Cr. hakodatei, Charybdis (Charybdis) japonica, and Portunus sanguinolentus were significantly associated with both vegetated and unvegetated habitats at the southern exposed bay, with the former two species more abundant during the colder season.

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Section: Discussionmentioning

confidence: 85%

Crustacean Decapod Assemblage Associated with Seagrass (Zostera marina) Beds in Southern Waters of Korea

Park

Kwak

Riedel³

2020

Diversity

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“…Marine species and ecosystems are impacted by increasing anthropogenic pressures such as human population growth that leads to increased demand for ocean space and resources (Halpern et al, 2015). Coastal areas, characterized by high species diversity and high productivity (Watanabe et al, 2018), are affected by human activities (Halpern et al, 2015). Their structural complexity influences the local species composition (Pihl & Wennhage, 2002; Tuya et al, 2019) and provides refuge space and food resources for species spending at least part of their life cycle there (Pihl & Wennhage, 2002; Kovalenko et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Disentangling the components of coastal fish biodiversity in southern Brittany by applying an environmental DNA approach

et al. 2022

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The global biodiversity crisis from anthropogenic activities significantly weakens the functioning of marine ecosystems and jeopardizes their ecosystem services. Increasing monitoring of marine ecosystems is crucial to understand the breadth of the changes in biodiversity, ecosystem functioning and propose more effective conservation strategies. Such strategies should not only focus on maximizing the number of species (i.e., taxonomic diversity) but also the diversity of phylogenetic histories and ecological functions within communities. To support future conservation decisions, multicomponent biodiversity monitoring can be combined with high-throughput species assemblage detection methods such as environmental DNA (eDNA) metabarcoding. Here, we used eDNA to assess fish biodiversity along the coast of southern Brittany (France, Iroise Sea). We filtered surface marine water from 17 sampling stations and applied an eDNA metabarcoding approach targeting Actinopterygii and Elasmobranchii taxa.We documented three complementary biodiversity components-taxonomic, phylogenetic, and functional diversity-and three diversity facets-richness, divergence and regularity. We identified a north/south contrast with higher diversity for the three facets of the biodiversity components in the northern part of the study area. The northern communities showed higher species richness, stronger phylogenetic overdispersion and lower functional clustering compared to the ones in the southern part, due to the higher diversity of habitats (reefs, rocky shores) and restricted access for fishing. Moreover, we also detected a higher level of taxonomic, phylogenetic, and functional uniqueness in many offshore stations compared to more coastal ones, with the presence of species typically living at greater depths (> 300 m), which suggests an influence of hydrodynamic structures and currents on eDNA dispersion and hence sample composition. eDNA metabarcoding can, therefore, be used as an efficient sampling method to reveal fine-scale community compositions and in combination with functional and phylogenetic information to document multicomponent biodiversity gradients in coastal marine systems.

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“…The physical structure and function of flats habitats are tightly intertwined and support productive fish and invertebrate communities (Watanabe et al 2018 ). For instance, mangroves and seagrass habitats offer abundant food sources and protection against predators (Nagelkerken et al 2001 , 2002 ; Adams et al 2006 ).…”

Section: Impacts To Flats Habitats Communities and Food Websmentioning

confidence: 99%

Cascading effects of climate change on recreational marine flats fishes and fisheries

et al. 2022

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Tropical and subtropical coastal flats are shallow regions of the marine environment at the intersection of land and sea. These regions provide myriad ecological goods and services, including recreational fisheries focused on flats-inhabiting fishes such as bonefish, tarpon, and permit. The cascading effects of climate change have the potential to negatively impact coastal flats around the globe and to reduce their ecological and economic value. In this paper, we consider how the combined effects of climate change, including extremes in temperature and precipitation regimes, sea level rise, and changes in nutrient dynamics, are causing rapid and potentially permanent changes to the structure and function of tropical and subtropical flats ecosystems. We then apply the available science on recreationally targeted fishes to reveal how these changes can cascade through layers of biological organization—from individuals, to populations, to communities—and ultimately impact the coastal systems that depend on them. We identify critical gaps in knowledge related to the extent and severity of these effects, and how such gaps influence the effectiveness of conservation, management, policy, and grassroots stewardship efforts.

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Introduction: the coastal ecosystem complex as a unit of structure and function of biological productivity in coastal areas

Cited by 29 publications

References 15 publications

Crustacean Decapod Assemblage Associated with Seagrass (Zostera marina) Beds in Southern Waters of Korea

Crustacean Decapod Assemblage Associated with Seagrass (Zostera marina) Beds in Southern Waters of Korea

Disentangling the components of coastal fish biodiversity in southern Brittany by applying an environmental DNA approach

Cascading effects of climate change on recreational marine flats fishes and fisheries

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