Comparative species composition and relative abundance of decapod crustaceans in marine habitats of Panam�

AbstractDecapod associations have been significant components of marine habitats throughout the Cenozoic when the major diversification of the group occurred. In this respect, the circum-Mediterranean area is of particular interest due to its complex palaeogeographic history. During the Oligo-Miocene, it was divided in two major areas, Mediterranean and Paratethys. Decapod crustaceans from the Paratethys Sea have been reported in the literature since the 19thcentury, but only recent research advances allow evaluation of the diversity and distribution patterns of the group. Altogether 176 species-level taxa have been identified from the Oligocene and Miocene of the Western and Central Paratethys. Using the three-dimensional NMDS analysis, the composition of decapod crustacean faunas of the Paratethys shows significant differences through time. The Ottnangian and Karpatian decapod associations were similar to each other both taxonomically and in the mode of preservation, and they differed taxonomically from the Badenian ones. The Early Badenian assemblages also differed taxonomically from the Late Badenian ones. The time factor, including speciation, immigration from other provinces and/or (local or global) extinction, can explain temporal differences among assemblages within the same environment. High decapod diversity during the Badenian was correlated with the presence of reefal settings. The Badenian was the time with the highest decapod diversity, which can, however, be a consequence of undersampling of other time slices. Whereas the Ottnangian and Karpatian decapod assemblages are preserved virtually exclusively in the siliciclastic “Schlier”-type facies that originated in non-reefal offshore environments, carbonate sedimentation and the presence of reefal environments during the Badenian in the Central Paratethys promoted thriving of more diverse reef-associated assemblages. In general, Paratethyan decapods exhibited homogeneous distribution during the Oligo-Miocene among the basins in the Paratethys. Based on the co-occurrence of certain decapod species, migration between the Paratethys and the North Sea during the Early Miocene probably occurred via the Rhine Graben. At larger spatial scales, our results suggest that the circum-Mediterranean marine decapod taxa migrated in an easterly direction during the Oligocene and/or Miocene, establishing present-day decapod communities in the Indo-West Pacific.

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Ecology of sandflies (Diptera: Psychodidae) in a restricted focus of cutaneous leishmaniasis en Northern Venezuela: I. Description of the study area, catching methods and species composition

Memórias do Instituto Oswaldo Cruz ◽

10.1590/s0074-02761987000100019 ◽

1987 ◽

Vol 82 (1) ◽

pp. 119-124 ◽

Cited By ~ 10

Author(s):

M. Dora Feliciangeli

Keyword(s):

Species Composition ◽

Cutaneous Leishmaniasis ◽

Relative Abundance ◽

Rare Species ◽

Common Species ◽

Term Study ◽

Phlebotomine Sandfly ◽

Phlebotomine Sandflies ◽

The Common ◽

Catching Methods

A study on the ecology of phlebotomine sandfly fauna in a restricted focus of cutaneous leishmaniasis in northern Venezuela was undertaken in order to investigate the species responsible for the transmission. The study area and catching methods for phlebotomine sandflies are described. A total of 9,061 females and 1,662 males were collected during a year-term study. 12 species of Lutzomya and 1 species of Brumptomya sp. were identified. Absolute and relative abundance and ocurrence for each species were determined. The rel ative occurrence allowed to distinguish the common species, viz. L. panamensis, L. ovallesi, L. gomezi, L. tinidadensis, L. atroclavata, L. cayennensis, L. shannoni and L. olmeca bicolor from the rare species vis., L. punctigeniculata, L. rangeliana, L. evansi and L. dubitans. General comments on the species composition of the sandfly fauna in this locality are made.

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Species Composition, Relative Abundance and Habitat Association of Birds in Arbegona, Garemba Forest, Southern Ethiopia

10.7176/alst/75-03 ◽

2019 ◽

Keyword(s):

Species Composition ◽

Relative Abundance ◽

Southern Ethiopia ◽

Habitat Association

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Species Composition, Relative Abundance and Habitat Association of Birds in Nansebo Forest, South Eastern Ethiopia

10.7176/alst/74-03 ◽

2019 ◽

Keyword(s):

Species Composition ◽

Relative Abundance ◽

Habitat Association ◽

Eastern Ethiopia ◽

South Eastern

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A Preliminary Survey of Amphibians and Reptiles in around Gulbarga University Campus, Karnataka, India

International Letters of Natural Sciences ◽

10.18052/www.scipress.com/ilns.27.67 ◽

2014 ◽

Vol 27 ◽

pp. 67-71

Author(s):

Murali Jadesh ◽

Parshuram Kamble ◽

K. Manjunath ◽

K. Ravikiran ◽

Sharanappa Padashetty

Keyword(s):

Species Composition ◽

Relative Abundance ◽

Survey Methods ◽

Preliminary Survey ◽

University Campus ◽

Visual Estimation ◽

Abundance And Distribution

The study involves survey of amphibian and reptile in and around Gulbarga University Campus. Survey was conducted from Jan 2012 to March 2013. The survey methods involved careful visual estimation of amphibians and reptilian in all the possible habitats present in the study area. The objective of the study included evaluate of species composition, relative abundance and distribution of amphibian and reptile of the chosen area. During survey a total of 16 species of herpetofauna identified belonging to 12 families, which includes 9 species of snakes, 4 species amphibians, 3 species of lizards

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Species composition of small mammals in key biotopes near Kolomak (Kharkiv Oblast)

Theriologia Ukrainica ◽

10.15407/tu2005 ◽

2021 ◽

Vol 2020 (20) ◽

pp. 29-38

Author(s):

Oksana Markovska ◽

Keyword(s):

Species Diversity ◽

Species Composition ◽

Small Mammals ◽

Relative Abundance ◽

Mus Musculus ◽

Sorex Araneus ◽

Myodes Glareolus ◽

Oak Forest ◽

Apodemus Agrarius ◽

Micromys Minutus

The study of the species composition and biotope preferences of small mammals around Kolomak had been carried out for four years (2017–2020). During the study period, 9 species of mouse-like rodents and 3 species of insectivores were found. No Cricetulus migratorius, Terricola subterraneus or Microtus oeconomus were found from the theoretically expected species already known for this area. Around Kolomak, 11 biotopes were investigated, including maple-linden oak forest, agrocenoses, dry and flooded meadows, which are located along the banks of a pond and in a gully-ravine system. The first year of research was in a year of high abundance (2017), and then 9 species were immediately discovered, but species with small abundance, such as Crocidura suaveolens, Sorex minutus, and Micromys minutus, were found in years with a small relative abundance of small mammals. Myodes glareolus, Sylvaemus tauricus and Sylvaemus uralensis are dominant species in the captures. According to the trapping results, 2017 was the year of high relative abundance of small mammals, 2018 was the year of the lowest relative abundance, 2019 and 2020 were years with an average relative abundance. During the study period, 6 species were identified in forest biotopes (Apodemus agrarius, Sylvaemus tauricus, Sylvaemus uralensis, Myodes glareolus, Sorex araneus, and Dryomys nitedula). In ecotones with floodplain biotopes, 8 species were found (Apodemus agrarius, Sylvaemus sylvaticus, Sylvaemus uralensis, Mus musculus, Micromys minutus, Myodes glareolus, and Sorex araneus). Four species (Mus musculus, Sylvaemus sylvaticus, Sylvaemus uralensis, and Microtus levis) were discovered near human settlements. In general, biotopes with the greatest species diversity and number of caught individuals are ecotones of dry and floodplain meadows. In years of high abundance, both species diversity and the number of individuals caught in the oak forest and in ecotones near the pond increased. It should be noted that Myodes glareolus was caught in clear-cuts during the two years (2019-2020) only in the summer of 2020. Earlier, not a single specimen of this species was caught there, although there is a dense weed grass cover in this area and the shrub layer has also grown up in some places, and the clear-cut is surrounded by oak forest.

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