Diversity and Functional Patterns of Benthic Amphipods in the Coralline Intertidal Zones of a Marine National Park, India

Srinivas, T. N. R.; Sukumaran, Soniya; Suresh, N.; Babu, K. Ramesh

doi:10.3389/fmars.2020.589195

Cited by 10 publications

(4 citation statements)

References 93 publications

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“…differentiation of ecological niches and patterns of species zonation, particularly in intertidal ecosystems (Gingold et al, 2010;Kraan et al, 2013;Gallucci et al, 2020). Intertidal and benthic community composition is also shaped by habitat heterogeneity, which determines the distribution of traits such as mobility and feeding mode (Pacheco et al, 2011;Buhl-Mortensen et al, 2012;Srinivas et al, 2020). In contrast, offshore ecosystems are generally considered less complex with major structuring environmental gradients (e.g.…”

Section: Drivers Of Structural Differencesmentioning

confidence: 99%

Trophic structuring of modularity alters energy flow through marine food webs

Eskuche-Keith

Hill²,

Hollyman³

et al. 2023

Front. Mar. Sci.

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Food web interactions govern how ecosystems respond to climate change and biodiversity loss. Modularity, where subgroups of species interact more often with each other than with species outside their subgroup, is a key structural feature which has been linked to food web stability. We sought to address the lack of understanding of how modularity varies among ecosystems by comparing the structure of four highly resolved marine food webs, using a simulated annealing algorithm to identify network modules and Random Forest models to predict the distribution of species across modules based on a set of eight functional traits. Modules in two offshore networks were partitioned largely by trophic level, creating an interdependence among them, whereas modules in two semi-enclosed bays were generally separated into energy channels with less trophic separation and containing distinct basal resources, providing greater redundancy in the flow of energy through the network. Foraging habitat and mobility predicted module membership in all networks, whilst body mass and foraging strategy also differentiated modules in the offshore and bay ecosystems, respectively. Environmental heterogeneity may be a key factor driving the differences in modularity and the relative importance of functional traits for predicting module membership. Our results indicate that, in addition to overall network modularity, the trophic structure of modules within food webs should be considered when making inferences about ecosystem stability.

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Section: Drivers Of Structural Differencesmentioning

confidence: 99%

Trophic structuring of modularity alters energy flow through marine food webs

Eskuche-Keith

Hill²,

Hollyman³

et al. 2023

Front. Mar. Sci.

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“…New taxon records for the GoK were contributed by Padate et al (2018). Seventy-one species of intertidal amphipods belonging to 23 families were identified from the coralline zones of the MNPS (Srinivas et al, 2020). Five functional traits of these amphipods were also studied to understand the spatial patterns in amphipod functioning.…”

Section: Coral Reefsmentioning

confidence: 99%

“…Higher species and functional diversities were observed at the lower intertidal zones of the GoK MNPS which had structurally complex habitats. The species distributional patterns in the intertidal zone were net effect of various physiological needs, limits and adaptations at different tidal levels (Srinivas et al, 2020). The type of substratum, shorter durations of exposure and moderate wave action of the intertidal zone contributed toward higher distribution of species rather than abiotic parameters like water temperature, pH and salinity (Misra and Kundu, 2005).…”

Section: Overview and General Trendsmentioning

confidence: 99%

Marine Macrobenthos of NorthWest India-Reviewing the Known and Unknown

et al. 2021

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Tropical ecosystems sustain higher biodiversity and face faster species extinction. However, baseline information of these areas is either inadequate or scattered due to various reasons. The 2,360 km long coast of North West India (NWI), is a heavily industrialized and urbanized zone. This coast with unique biogeographical and climatic features with two notified marine protected areas also supports rich biodiversity. This review was motivated by a need to construct a synoptic view on marine benthic ecology and functioning by consolidating available information of macrobenthos. Two thousand seventy-eight macrobenthic taxa belonging to 14 phyla were compiled from 147 references and were composed mostly by Polychaeta (n = 617), Gastropoda (n = 602), and Bivalvia (n = 216). Habitat wise, intertidal and subtidal zones were more intensely studied and contributed most to the diversity records. Sediment texture and salinity were the major drivers of macrobenthic community structure in the subtidal areas and estuaries, respectively. In the intertidal zones, zonation patterns related to the tidal levels and time of exposure were distinct with the high water zones being sparsely populated and lower intertidal zones sustaining higher species and functional diversities. All zones of NWI coast were distinctly impacted to various extent by anthropogenic activities affecting the resident macrobenthos. Decline in species richness and species substitution due to pollution were reported in urbanized zones. Non-monsoonal months favored a more conducive environment for the macrobenthic diversity and functionality. Hypoxia tolerant polychaete species mainly belonging to Spionidae and Cossuridae dominated during the low oxygen conditions of upwelling and OMZ zones of NWI. Inadequate identification and inconsistency of sampling methods were major deterrents for concluding trends of distributions. Suggestions for future macrobenthic research include focusing on lesser studied groups and areas, seasonal as well anthropogenic hypoxic zones and well planned long-term monitoring studies. Major data lacunae were identified in the taxonomy, molecular, functional aspects, and bioinvasive studies of macrobenthos in this geographical zone despite clear evidence of high diversity of extant macrofauna. This compendium should help prioritize research areas and objectives aimed at enhancing our understanding of macrobenthos and improve predictive capabilities of community shifts that may occur due to global climate change scenarios.

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“…Thus, amphipods are globally crucial in marine ecosystems by supporting and linking trophic levels [2,5]. Their ecological relevance is explained by the great functional diversity as they embrace different life styles (e.g., burrowing, bentho-pelagic, epibenthic, and pelagic) [6,7] and multiple feeding strategies (detritivores, filter-feeders, grazers, predators, and scavengers) [8,9]. In this way, amphipods can act as benthic-pelagic coupling facilitators [2].…”

Section: Introductionmentioning

confidence: 99%

Rediscovering the Evasive Amphipod Idunella spinifera (Dauvin and Gentil, 1983) in the Northwest Coast of the Iberian Peninsula

Moreira,

Veiga,

Rubal

2024

JMSE

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Idunella spinifera (Dauvin and Gentil, 1983) (Crustacea: Amphipoda: Liljeborgiidae) is reported for the first time after the original description that was based on one immature female. Specimens were collected in the Ría de Muros (NW Iberian Peninsula) during the course of a study on macrofauna diversity in shallow sublittoral biogenic sands along a one-year period. The male and the ovigerous female are fully described, and the data on ecology and temporal variation of abundance is provided as well.

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Diversity and Functional Patterns of Benthic Amphipods in the Coralline Intertidal Zones of a Marine National Park, India

Cited by 10 publications

References 93 publications

Trophic structuring of modularity alters energy flow through marine food webs

Trophic structuring of modularity alters energy flow through marine food webs

Marine Macrobenthos of NorthWest India-Reviewing the Known and Unknown

Rediscovering the Evasive Amphipod Idunella spinifera (Dauvin and Gentil, 1983) in the Northwest Coast of the Iberian Peninsula

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