Consulta: subjectFacets:"Taxonomic diversity"
Registros recuperados: 10
Data/hora: 08/06/2024 16:59:39

Сравнительный анализ таксономического разнообразия диатомовых бентоса  в различных регионах  Чёрного моря.
Provedor de dados: 13
Autores: Неврова, Е. Л.; Петров, А. Н.
Составлен список диатомовых бентоса из прибрежных регионов Чёрного моря, включающий 553 вида (705 видов и внутривидовых таксонов), принадлежащих к 115 родам, 59 семействам, 31 порядку и 3 классам отдела Bacillariophyta. Наибольшее сходство по коэффициенту Брэй-Куртиса на внутривидовом, видовом и родовом уровнях отмечено между регионами Крым — СЗЧМ (77, 80 и 86 %, соответственно), наименьшее – между регионами Крым — Болгария (53, 56 и 76 %, соответственно для тех же уровней). Максимальное межрегиональное сходство на уровне семейств и порядков выявлено для регионов Кавказ — Крым (94.5, 93.9 %), минимальное – для регионов Румыния — Болгария (80 и 81 %, соответственно). С помощью таксономического анализа на иерархическом древе диатомовых каждого региона...
Tipo: Journal Contribution
Palavras-chave: Диатомовые бентоса; Bacillariophyta; Таксономическое разнообразие; Чёрное море; Benthic diatoms; Taxonomic diversity; Black Sea; Діатомові бентосу; Таксономічне різноманіття; Чорне море.
Ano: 2007
URL: http://repository.ibss.org.ua/dspace/handle/99011/856

FishMed: traits, phylogeny, current and projected species distribution of Mediterranean fishes, and environmental data
Provedor de dados: 5
Autores: Albouy, Camille; Lasram, Frida Ben Rais; Velez, Laure; Guilhaumon, François; Meynard, Christine N.; Boyer, Séverine; Benestan, Laura; Mouquet, Nicolas; Douzery, Emmanuel; Aznar, Roland; Troussellier, Marc; Somot, Samuel; Leprieur, Fabien; Le Loc'H, François; Mouillot, David.
The FishMed database provides traits, phylogeny, current and projected species distribution of Mediterranean fishes, and associated sea surface temperature (SST) from the regional oceanic model NEMOMED8. Data for the current geographical distributions of 635 Mediterranean fish species were compiled from a published expert knowledge atlas of fishes of the northern Atlantic and the Mediterranean (FNAM) edited between 1984 and 1986 and from an updated exotic fish species list. Two future sets of projected species distributions were obtained for the middle and end of the 21st century by using an ensemble forecasting approach for 288 coastal Mediterranean fish species based on SST according to the IPPC/SRES A2 scenario implemented with the Mediterranean...
Tipo: Text
Palavras-chave: Climate change; Coastal fishes; Functional diversity; Mediterranean fish species; Mediterranean Sea; NEMOMED8; Phylogenetic diversity; Species distribution models; Taxonomic diversity.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00371/48216/48341.pdf

Musical Chairs on Temperate Reefs: Species Turnover and Replacement Within Functional Groups Explain Regional Diversity Variation in Assemblages Associated With Honeycomb Worms
Provedor de dados: 5
Autores: Muller, Alexandre; Poitrimol, Camille; Nunes, Flavia; Boye, Aurelien; Curd, Amelia; Desroy, Nicolas; Firth, Louise B; Bush, Laura; Davies, Andrew J; Lima, Fernando P; Marzloff, Martin; Meneghesso, Claudia; Seabra, Rui; Dubois, Stanislas.
Reef-building species are recognized as having an important ecological role and as generally enhancing the diversity of benthic organisms in marine habitats. However, although these ecosystem engineers have a facilitating role for some species, they may exclude or compete with others. The honeycomb worm Sabellaria alveolata (Linnaeus, 1767) is an important foundation species, commonly found from northwest Ireland to northern Mauritania, whose reef structures increase the physical complexity of the marine benthos, supporting high levels of biodiversity. Local patterns and regional differences in taxonomic and functional diversity were examined in honeycomb worm reefs from 10 sites along the northeastern Atlantic to explore variation in diversity across...
Tipo: Text
Palavras-chave: Biodiversity; Taxonomic diversity; Functional diversity; Ecosystem engineer; Reef; Turnover.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00693/80506/83709.pdf

Complementarity of the multidimensional functional and the taxonomic approaches to study phytoplankton communities in three Mediterranean coastal lagoons of different trophic status
Provedor de dados: 5
Autores: Leruste, A.; Villeger, S.; Malet, Nathalie; De Wit, R.; Bec, B.
We used the individual-based multidimensional functional diversity and the taxonomic approaches in a complementary way to describe phytoplankton communities in three coastal lagoons with different eutrophication status in the South of France. We sampled communities during three seasons, i.e., in autumn, spring, and summer. Using classical taxonomy, 107 taxa/morphotypes were identified in the nine communities. The individual-based functional approach allowed grouping these individuals into 20 functional entities according to their values for 5 traits related to trophic adaptations (cell size, mobility, trophic regime, coloniality, and pelagic/benthic life). Some species (e.g., Prorocentrum micans) emerged in multiple functional entities, showing the...
Tipo: Text
Palavras-chave: Classification; Functional entity; Functional traits; Taxonomic diversity.
Ano: 2018
URL: http://archimer.ifremer.fr/doc/00433/54454/55826.pdf

Biological data extraction from imagery - How far can we go? A case study from the Mid-Atlantic Ridge
Provedor de dados: 5
Autores: Cuvelier, Daphne; De Busserolles, Fanny; Lavaud, Romain; Floc'H, Estelle; Fabri, Marie-claire; Sarradin, Pierre-marie; Sarrazin, Jozee.
In the past few decades, hydrothermal vent research has progressed immensely, resulting in higher-quality samples and long-term studies. With time, scientists are becoming more aware of the impacts of sampling on the faunal communities and are looking for less invasive ways to investigate the vent ecosystems. In this perspective, imagery analysis plays a very important role. With this study, we test which factors can be quantitatively and accurately assessed based on imagery, through comparison with faunal sampling. Twelve instrumented chains were deployed on the Atlantic Eiffel Tower hydrothermal edifice and the corresponding study sites were subsequently sampled. Discrete, quantitative samples were compared to the imagery recorded during the experiment....
Tipo: Text
Palavras-chave: Hydrothermal vents; Image analyses; Deep ocean; Taxonomic diversity; Mid-Atlantic Ridge; Data processing; Benthic ecology.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00117/22868/21643.pdf

A multimetric-index approach using fisheries data to assess fish assemblage structure in relation to salinity gradient in a tropical West African estuary
Provedor de dados: 5
Autores: Kantoussan, J.; Ecoutin, J. M.; Lae, R.; Thiaw, O. T.; Tito De Morais, L.
This study examines the effects of increasing salinity on fish assemblage structure in the Casamance Estuary, Senegal. using a series of indices. The study data were derived from commercial fishery surveys conducted between April and July 2005. Analysis of within-trophic-group diversity in the Casamance Estuary shows a significant drop in the diversity of apex predators in the upper. more saline reaches of the estuary. By contrast. primary consumers adapted well to salinity changes and exhibited higher taxonomic diversity in the upper reaches of the estuary than in the lower reaches. The findings also indicate decreases in average sizes of the landed species and the trophic levels among fish catches in the direction of the upper reaches. However, the catch...
Tipo: Text
Palavras-chave: Biological indicators; Casamance Estuary; Ecosystem monitoring; Fishery statistics; Inverse hypersaline estuary; Senegal; Taxonomic diversity.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00451/56222/57945.pdf

A new technique for inventory of permanent plots in tropical forests: a case study from lowland dipterocarp forest in Kuala Belalong, Brunei Darussalam
Provedor de dados: 16
Autores: Hédl, R.; Svátek, M.; Dančák, M.; Rodzay, A.W.; Salleh, M.A.B.; Kamariah, A.S.
This paper describes a new technique for inventory of permanent plots in tropical forests and presents the results of its application in a 1 ha permanent plot in a lowland dipterocarp forest at Kuala Belalong, Ulu Temburong National Park, Brunei Darussalam. The technique is based on mapping of positions of tree individuals in three-dimensional space with a high accuracy. Measuring set consists of a distance measuring device (laser rangefinder) and a electronic compass supplying data to a field computer with specialized software (Field-Map®). This method is faster and more exact than methods based on Cartesian grids established in the field. As an example, inventories from 2000 and 2007 of the plot mentioned are compared concerning presence, taxonomical...
Tipo: Article / Letter to the editor
Palavras-chave: Electronic compass; Field-map; Forest inventory; Forest structure; Laser rangefinder; Lowland dipterocarp forest; Permanent plots; Taxonomic diversity.
Ano: 2009
URL: http://www.repository.naturalis.nl/record/524957

Arbuscular mycorrhizal fungi and dark septate fungi in plants associated with aquatic environments
Provedor de dados: 39
Autores: Marins,Josy Fraccaro de; Carrenho,Rosilaine.
ABSTRACT There have been several reports of symbionts in the roots of plants that live in aquatic environments. Arbuscular mycorrhizal fungi (AMF) are the most common microsymbionts and possibly recolonized the aquatic environment together with plants; however, their functions and the extent of their benefits are unclear. Furthermore, the presence of other groups of fungi, such as dark septate fungi (DSF), with functions supposedly analogous to those of mycorrhizal fungi, has also been reported. The present work provides a compilation of data regarding the presence of arbuscular mycorrhizae in plants from, or under the influence of, aquatic environments, and co-colonization by AMF and DSF. Forty species of non-vascular plants, ferns, fern allies, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colonization; Flooding; Fungal co-occurrence; Macrophytes; Taxonomic diversity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200295

Floristic characterization of an Atlantic Rainforest remnant in Southern Sergipe: Crasto forest
Provedor de dados: 49
Autores: Landim,Myrna Friederichs; Proença,Carolyn Elinore Barnes; Sales,Adeline Brito; Matos,Ilaíne Silveira.
The state of Sergipe has suffered extreme reduction of its Atlantic Forest area in the last decades. The objective of this study is to present an inventory of the Mata do Crasto flora, the largest Atlantic Forest Remnant in Sergipe (approximately 1,000 ha), located in the Municipality of Santa Luzia do Itanhy. An intensive survey was undertaken with monthly plant collections in the study area, for four years (1995 to 1999). Additionally, collections deposited in herbaria were consulted to complete the species list. A total of 324 species were found, belonging to 84 families and 193 genera. This study adds an additional 29 genera and 96 species to the Sergipe flora as new occurrences. The four most speciose families were the Fabaceae (33 species), Rubiaceae...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flora; Coastal Vegetation; Taxonomic diversity; São Francisco River.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000100201

Deep-water Ophiuroidea (Echinodermata) from off Chile in the Eastern South Pacific
Provedor de dados: 49
Autores: Manso,Cynthia Lara de Castro.
The ophiuroids collected during the Oceanographic Expedition PUCK (SONNE-156) in 2001, in the framework of the project "Interactions between productivity and environment along the Chilean continental shelf" were analyzed. Eight samples had ophiuroids; Fifteen species were distributed in the following families: Gorgonocephalidae (2), Asteronychidae (2), Ophiomyxidae (1), Ophiacanthidae (2), Ophiuridae (5), Amphiuridae (1), and Ophiolepididae (2). Four species were recorded for the first time from Chilean waters, i.e., Asteronyx loveni Müller &amp;amp; Troschel, Astrodia tenuispina Verrill, Ophiolimna bairdi (Lyman), and Ophiocten amitinum Lyman, and three are new, i.e., Ophiura (Ophiuroglypha) arntzi sp. nov., Amphiophiura gallardoi sp. nov., and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ophiuroid; Deep-water; Chilean continental margin; Chilean abyssal zone; Taxonomic diversity.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032010000200023