Institution
National Institute of Oceanography, India
Facility•Panjim, Goa, India•
About: National Institute of Oceanography, India is a facility organization based out in Panjim, Goa, India. It is known for research contribution in the topics: Monsoon & Population. The organization has 4713 authors who have published 6927 publications receiving 174272 citations.
Topics: Monsoon, Population, Bay, Phytoplankton, Continental shelf
Papers published on a yearly basis
Papers
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TL;DR: The hypothesis that seaweeds' effects on resident biodiversity are generally more negative within the same trophic level than on higher trophics guilds is supported, as well as high heterogeneity in the responses of some consumer guilds suggests that impacts of non-native seaweeds at higher troPHic levels may be more invader- and species-specific than competitive effects at the same Trophic levels.
Abstract: Aim
Biological invasions are among the main threats to biodiversity. To promote a mechanistic understanding of the ecological impacts of non-native seaweeds, we assessed how effects on resident organisms vary according to their trophic level.
Location
Global.
Methods
We performed meta-analytical comparisons of the effects of non-native seaweeds on both individual species and communities. We compared the results of analyses performed on the whole dataset with those obtained from experimental data only and, when possible, between rocky and soft bottoms.
Results
Meta-analyses of data from 100 papers revealed consistent negative effects of non-native seaweeds across variables describing resident primary producer communities. In contrast, negative effects of seaweeds on consumers emerged only on their biomass and, limited to rocky bottoms, diversity. At the species level, negative effects were consistent across primary producers' response variables, while only the survival of consumers other than herbivores or predators (e.g. deposit/suspension feeders or detritivores) decreased due to invasion. Excluding mensurative data, negative effects of seaweeds persisted only on resident macroalgal communities and consumer species survival, while switched to positive on the diversity of rocky-bottom consumers. However, negative effects emerged for biomass and, in rocky habitats, density of consumers other than herbivores or predators.
Main conclusions
Our results support the hypothesis that seaweeds' effects on resident biodiversity are generally more negative within the same trophic level than on higher trophic guilds. Finer trophic grouping of resident organisms revealed more complex impacts than previously detected. High heterogeneity in the responses of some consumer guilds suggests that impacts of non-native seaweeds at higher trophic levels may be more invader- and species-specific than competitive effects at the same trophic level. Features of invaded habitats may further increase variability in seaweeds' impacts. More experimental data on consumers' response to invasion are needed to disentangle the effects of non-native seaweeds from those of other environmental stressors.
84 citations
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TL;DR: In this paper, the authors studied the effect of the Eastern Mediterranean Transient on the distribution of physical and chemical parameters in the Easternmost Levantine basin from 2002 to 2010 in the open sea and at the continental slope.
84 citations
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TL;DR: In this paper, the concentrations of multiple redox-sensitive elements such as Re, U, Mo, Cd, V, Sb, and Tl were determined in sediments from the southeastern Arabian Sea (9 o 21' N: 71 o 59'E) to understand the bottom water oxygenation history throughout the past 140 ka.
84 citations
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TL;DR: In this article, the authors investigated the transfer of some important biogenic atmospheric constituents across the air-sea interface using published data generated mostly during the Arabian Sea Process Study (1992-1997) of the Joint Global Ocean Flux Study (JGOFS) and found that the most important contribution of the region to biogeochemical fluxes is through the production of N2 and N2O facilitated by an acute, midwater deficiency of dissolved oxygen (O2); emissions of these gases to the atmosphere from the Arabian sea are globally significant.
84 citations
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TL;DR: The inferred shift in the community structure from a dominant picoplankton fraction and Prymnesiophytes to diatom-dominated microplankton toward the north is ascribed to differences in the physico-chemical environment.
Abstract: Phytoplankton composition and abundance were studied along the southwestern Indian coast toward the end of the upwelling season in October 2004. Phytoplankton pigment analyses, complemented by limited microscopic counts, were carried out to determine the community structure. Chlorophyll a was the most abundant of all pigments, followed by fucoxanthin. Zeaxanthin was abundantly found in the southern part of the study region (off Trivandrum), whereas fucoxanthin was the dominant marker pigment in the north (off Goa). The inferred shift in the community structure from a dominant picoplankton fraction and Prymnesiophytes to diatom-dominated microplankton toward the north is ascribed to differences in the physico-chemical environment.
84 citations
Authors
Showing all 4731 results
Name | H-index | Papers | Citations |
---|---|---|---|
Amit Kumar | 65 | 1618 | 19277 |
Muhammad Tahir | 65 | 1636 | 23892 |
Shubha Sathyendranath | 64 | 246 | 18141 |
Anjan Chatterjee | 61 | 276 | 11675 |
Stephen E. Calvert | 60 | 108 | 12044 |
Michael D. Krom | 59 | 137 | 10846 |
Victor Smetacek | 59 | 135 | 19279 |
Nicola Casagli | 58 | 391 | 11786 |
Michael S. Longuet-Higgins | 56 | 132 | 15846 |
Baruch Rinkevich | 54 | 249 | 8819 |
Jérôme Vialard | 52 | 160 | 9094 |
Matthieu Lengaigne | 51 | 147 | 11510 |
José M. Carcione | 50 | 346 | 9421 |
Antonio M. Pascoal | 49 | 371 | 8905 |
Assaf Sukenik | 49 | 125 | 7166 |