Global seagrass distribution and diversity: A bioregional model

Short, Frederick T.; Carruthers, T. J. B.; Dennison, William C.; Waycott, Michelle

doi:10.1016/j.jembe.2007.06.012

Cited by 939 publications

(765 citation statements)

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“…Camarones carídeos y peneidos, nuevos registros, estado Falcón, Halodule, Thalassia. Seagrass meadows are a conspicuous and widely spread marine ecosystem in temperate and tropical zones (Ávila et al, 2015); they have been ranked among the most valuable ecosystems in the biosphere, since they provide important ecological services, such as maintaining the coastline against erosion, and offering habitat for diverse species that are considered endangered or that have economic importance (Short et al, 2007). In spite of this, seagrasses are experiencing a global decline in abundance (and therefore there is also a reduction of its associated community), which is mainly attributed to anthropogenic activities, such as sedimentation due to deforestation, an excessive production of nutrients in coastal waters, as well as habitat destruction, invasive species, pollution, and hydrological alterations (Cabaço et al, 2008;Ávila et al, 2015).…”

Section: Palabras-clavementioning

confidence: 99%

Composition and abundance of decapod crustaceans in mixed seagrass meadows in the Paraguaná Peninsula, Venezuela

Mariño

Mendoza

López-Sánchez

2018

Iheringia, Sér. Zool.

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ABSTRACT. Thalassia testudinum and Halodule wrigthii are the dominant seagrasses in the Caribbean, being common across shallow shorelines, either as monospecific or as intermixed meadows. Among the macrofauna associated with these beds, crustaceans are considered essential for the whole ecosystem functioning. However, knowledge about the associated community of decapod crustaceans in assemblages of T. testudinum and H. wrigthii is still scarce, particularly outside of protected areas. Here we report eight new decapod species for the Paraguaná Peninsula (Falcón State, Venezuela) Manning & Chace, 1971. These records represent habitat extensions and fill gaps in the geographical distribution of the species along the northern coast of South America. Furthermore, we found that statistical differences in decapod species abundance and composition are likely to be caused by the joint action of coverage and heterogeneity of the beds. Our results indicate that typical Caribbean species were the most influential in the community; nevertheless, the abundance of juvenile Penaeus schmitti Burkenroad, 1936 was notable, since they have rarely been found in these habitats. This finding highlights the role of non-protected areas as nursery habitats for economically important species. Our results show that seagrass meadows in the Paraguaná Peninsula reflect overall good health when compared to other Caribbean zones, representing an important habitat for the maintenance of crustacean populations.KEYWORDS. Caridean and penaeid shrimps, new records, Falcón state, Halodule, Thalassia.RESUMEN. Composición y abundancia de crustáceos decápodos en praderas mixtas de hierbas marinas en la península de Paraguaná, Venezuela. Thalassia testudinum y Halodule wrigthii son las hierbas marinas dominantes en el Caribe, siendo comunes en costas someras, tanto en monocultivos como en cultivos mixtos. Entre la macrofauna asociada a estas comunidades, los crustáceos son considerados esenciales para el funcionamiento del ecosistema. Sin embargo, el conocimiento sobre la comunidad de crustáceos decápodos asociada a praderas mixtas de T. testudinum y H. wrigthii es escaso, en particular fuera de zonas protegidas. En este trabajo presentamos ocho nuevas especies de decápodos para la Península de Paraguaná (estado Falcón, Venezuela) asociados a praderas mixtas de hierbas marinas: Achelous tumidulus Stimpson, 1871, Alpheus floridanus Kingsley, 1878, Chorinus heros (Herbst, 1790), Clibanarius antillensis (Stimpson, 1859), Clibanarius sclopetarius (Herbst, 1796), Latreutes parvulus (Stimpson, 1866), Panopeus occidentalis Saussure, 1857, y Processa fimbriata Manning & Chace, 1971. Estos registros representan extensiones de hábitat y completan brechas en la distribución geográfica de las especies a lo largo de la costa septentrional de Sudamérica. Diferencias estadísticas en la abundancia y composición de las especies de decápodos fueron posiblemente causadas por la acción conjunta de cobertura y heterogeneidad de las praderas. Las especies más influyentes e...

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Section: Palabras-clavementioning

confidence: 99%

Composition and abundance of decapod crustaceans in mixed seagrass meadows in the Paraguaná Peninsula, Venezuela

Mariño

Mendoza

López-Sánchez

2018

Iheringia, Sér. Zool.

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“…The rhizome net traps and stabilizes the sediments, contributing to sediment accretion, the accumulation of organic matter and carbon sequestration. Seagrasses and SAV improve water quality by oxygenation and by removing excess nutrients and other pollutants from river and runoff inputs (KOCH, 2001;SHORT et al, 2007;BARBIER et al, 2001). Due to their structural complexity and high primary production, they provide food and nursery habitats for many invertebrates and fish; many economically important fish and shellfish species depend on seagrass beds during critical stages of their life cycle WAYCOTT et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Seagrass and Submerged Aquatic Vegetation (VAS) Habitats off the Coast of Brazil: state of knowledge, conservation and main threats

et al. 2016

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Financial Support: This study was supported by the Brazilian Network for Coastal Benthic Studies -ReBentos (Programa SISBIOTA), Rede CLIMA and INCT for Climate Changes; sponsored by CNPq and FAPESP. Seagrass meadows are among the most threatened ecosystems on earth, raising concerns about the equilibrium of coastal ecosystems and the sustainability of local fisheries. The present review evaluated the current status of the research on seagrasses and submerged aquatic vegetation (SAV) habitats off the coast of Brazil in terms of plant responses to environmental conditions, changes in distribution and abundance, and the possible role of climate change and variability. Despite an increase in the number of studies, the communication of the results is still relatively limited and is mainly addressed to a national or regional public; thus, South American seagrasses are rarely included or cited in global reviews and models. The scarcity of large-scale and long-term studies allowing the detection of changes in the structure, abundance and composition of seagrass habitats and associated species still hinders the investigation of such communities with respect to the potential effects of climate change. Seagrass meadows and SAV occur all along the Brazilian coast, with species distribution and abundance being strongly influenced by regional oceanography, coastal water masses, river runoff and coastal geomorphology. Based on these geomorphological, hydrological and ecological features, we characterised the distribution of seagrass habitats and abundances within the major coastal compartments. The current conservation AbstrActPradarias de gramas marinhas e vegetação aquática submersa (VAS) estão entre os ecossistemas mais ameaçados do planeta, gerando preocupação sobre o equilíbrio dos ecossistemas costeiros e a sustentabilidade das pescarias. A presente revisão avaliou o estado do conhecimento sobre as pradarias marinhas e VAS do Brasil, considerando as respostas das plantas às condições ambientais, e o possível papel da geomorfologia costeira e variabilidade climática sobre a distribuição e abundância das populações. Apesar do crescente aumento no número de publicações, a comunicação dos resultados ainda é relativamente limitada e destina-se principalmente ao público nacional ou regional. Como resultado, as pradarias de gramas marinhas da América do Sul raramente são incluídas ou citadas em revisões e modelos globais. A escassez de estudos em larga escala e de longo prazo, permitindo a detecção de mudanças na estrutura, abundância e composição dos habitats e espécies associadas, limita a investigação das comunidades no que diz respeito aos efeitos potenciais das mudanças climáticas. Pradarias marinhas e VAS ocorrem ao longo de toda a costa brasileira, mas a distribuição e abundância das espécies são influenciadas pela oceanografia regional, massas de água costeiras, descarga de rios e geomorfologia costeira. Com base nas características oceanográficas, geomorfológicas, hidrológicas e ecológicas, o estudo discutiu a distr...

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“…Its populations appear to be declining due to anthropogenic impacts (Short et al 2010). The distribution range of H. baillonis is restricted to the Tropical Atlantic region (Short et al 2007), with recorded occurrences only in approximately eight localities in the Caribbean (Short et al 2010) and one along the Pacific coast of Costa Rica (SamperVillarreal et al 2014), with historical records in Brazil (den Hartog 1970, 1972, Oliveira-Filho et al 1983 and Costa Rica (Pacific coast) (Cortes 2001). Ecological information about this species is limited to its distribution in the western Caribbean area (Short et al 2006) and its association with other seagrass meadows (Cortes 2001), as well as a characterization of seagrass meadows and the associated benthic macrofauna on the southern Pacific coast of Costa Rica (Samper-Villarreal et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Halophila baillonis Ascherson: first population dynamics data for the Southern Hemisphere

Magalhães

Borges

Pitanga

2015

An. Acad. Bras. Ciênc.

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The present paper presents the first population data for the Southern Hemisphere of the rare seagrass Halophila baillonis. The population studied is located in a calm, reef-protected area at depths ≤ 5 m, covering 12,000 m2 (400 m long by 30 m wide, oriented parallel to the coastline). The population generally demonstrated low shoot density and biomass during the rainy season, with significant differences between seasons, being found only for aboveground biomass. Despite the identification of this new population, the species continues to be considered rare along the Brazilian coast.

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Global seagrass distribution and diversity: A bioregional model

Cited by 939 publications

References 36 publications

Composition and abundance of decapod crustaceans in mixed seagrass meadows in the Paraguaná Peninsula, Venezuela

Composition and abundance of decapod crustaceans in mixed seagrass meadows in the Paraguaná Peninsula, Venezuela

Seagrass and Submerged Aquatic Vegetation (VAS) Habitats off the Coast of Brazil: state of knowledge, conservation and main threats

Halophila baillonis Ascherson: first population dynamics data for the Southern Hemisphere

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