scholarly journals Phylogeography of a gypsum endemic plant across its entire distribution range in the western Mediterranean

2021 ◽  
Author(s):  
Mario Blanco‐Sánchez ◽  
Michael J. Moore ◽  
Marina Ramos‐Muñoz ◽  
Beatriz Pías ◽  
Alfredo García‐Fernández ◽  
...  
Keyword(s):  
Western Mediterranean ◽  
Distribution Range ◽  
Endemic Plant ◽  
Entire Distribution

Vegetation and hydrogeology along the distribution range of Centaurium somedanum, an endemic plant of mountain calcareous springs

Alpine Botany ◽  
2013 ◽  
Vol 123 (1) ◽  
pp. 31-39 ◽  
Author(s):  
Borja Jiménez-Alfaro ◽  
Susana Fernández Menéndez ◽  
Álvaro Bueno ◽  
José Antonio Fernández Prieto
Keyword(s):  
Distribution Range ◽  
Endemic Plant

scholarly journals First record of the rare crab Asthenognathus atlanticus Monod, 1933 (Crustacea: Brachyura: Varunidae) in the North Sea

2021 ◽  
Vol 50 (3) ◽  
pp. 352-358
Author(s):  
Marco Faasse ◽  
Hendrik Gheerardyn ◽  
Rob Witbaard ◽  
Joël Cuperus
Keyword(s):  
North Sea ◽  
First Record ◽  
Western Mediterranean ◽  
Distribution Range ◽  
Marine Waters ◽  
The West ◽  
The North ◽  
The North Sea ◽  
Northward Expansion ◽  
First Time

Abstract Several species new to the area were collected while monitoring Dutch marine waters using a dredge. The varunid crab Asthenognathus atlanticus Monod, 1933 was recorded for the first time in the North Sea. Until 2008, this relatively rare crab was known from the west coast of Africa and the western Mediterranean to northern Brittany in the north. In recent years, its distribution range has expanded, as indicated by records from the Bay of the Seine and the area around Dieppe-Le Tréport. Our finding from Brown Bank (southern North Sea) indicates a further, northward expansion of its distribution range. We list the hosts with which the crab is associated. Earlier arguments for climate change as an explanation for the northward range expansion are supported.

scholarly journals Biology and population dynamics of by-catch fish species of the bottom trawl fishery in the western Mediterranean

2014 ◽  
Vol 15 (3) ◽  
pp. 613 ◽  
Author(s):  
F. ORDINES ◽  
M.T. FARRIOLS ◽  
J. LLEONART ◽  
B. GUIJARRO ◽  
A. QUETGLAS ◽  
...  
Keyword(s):  
Population Analysis ◽  
Conservation Status ◽  
Fishing Effort ◽  
Western Mediterranean ◽  
Distribution Range ◽  
Bottom Trawl ◽  
Trawl Fishery ◽  
Virtual Population ◽  
Trawl Fishing ◽  
By Catch

The teleosts Chelidonichthys cuculus, Trigloporus lastoviza, Serranus cabrilla and Trachinus draco, are important by-catch species, in terms of landed biomass and commercial value, from the continental shelf bottom trawl fishery off the Balearic Islands (western Mediterranean). The main biological parameters of these species were calculated from monthly biological samplings, and were used along with three years pseudo-cohorts (2008-2010) obtained from monitoring on-board of the bottom trawl fleet, to assess their exploitation level through Virtual Population Analysis (VPA) and Yield per Recruit (Y/R) analysis. Time series of fishery independent indicators based on MEDITS surveys data such as the evolution of the abundance and biomass, the distribution range, and the Conservation Status of Fish b (CSFb), were also analyzed. All four species analyzed showed growth overfishing. The reductions of the fishing effort required to reach the Y/RF0,1 reference point were lower, 66-73% depending on the species, to those reported for the target species M. merluccius (87%), but higher than that reported for M. surmuletus (53%), in the study area in the period 2000-2010. The abundance and biomass, and the distribution range did not show any trend for the period 2001-2011, whereas the CSFb showed signs of recovery that may be due to the displacement of the trawl fishing effort from the shelf to the slope during the last decade. Our results underline the necessary incorporation of monitoring and assessment of by-catch species to the management of fisheries as their populations can show a more pronounced overexploitation than target ones.

scholarly journals Bombus gerstaeckeri Morawitz, 1881 (Hymenoptera, Apidae) : observations sur la biologie d’un bourdon localisé et oligolectique

Osmia ◽  
2012 ◽  
Vol 5 ◽  
pp. 12-14
Author(s):  
Simon Dellicour ◽  
Nicolas J. Vereecken ◽  
Denis Michez
Keyword(s):  
Distribution Range ◽  
Field Surveys ◽  
Entire Distribution

Bombus gerstaeckeri Morawitz, 1881 (Hymenoptera, Apidae): observations on the biology of a localized and oligolectic bumblebee. - Bombus gerstaeckeri Morawitz 1881 is a particular species for its scarcity and oligolecty on species of the genus Aconitum (Ranunculaceae). We performed a sampling of B. gerstaeckeri across its entire distribution range during the summers of 2010 and 2011, in the framework of a study on the evolution of floral specialisation with a phylogeographic approach in the subgenus Megabombus. Here we present recent observations during our field surveys.

Integrating multiple lines of evidence to better understand the evolutionary divergence of humpback dolphins along their entire distribution range: a new dolphin species in Australian waters?

2013 ◽  
Vol 22 (23) ◽  
pp. 5936-5948 ◽  
Author(s):  
Martin Mendez ◽  
Thomas A. Jefferson ◽  
Sergios-Orestis Kolokotronis ◽  
Michael Krützen ◽  
Guido J. Parra ◽  
...  
Keyword(s):  
Distribution Range ◽  
Evolutionary Divergence ◽  
Lines Of Evidence ◽  
Entire Distribution

scholarly journals Effects of environmental heterogeneity on phenotypic variation of the endemic plant Lilium pomponium in the Maritime and Ligurian Alps

Oecologia ◽  
2020 ◽  
Author(s):  
Carmelo Macrì ◽  
Davide Dagnino ◽  
Maria Guerrina ◽  
Frédéric Médail ◽  
Luigi Minuto ◽  
...  
Keyword(s):  
Phenotypic Variation ◽  
Environmental Heterogeneity ◽  
Pollen Limitation ◽  
Phenotypic Variability ◽  
Distribution Range ◽  
Floral Traits ◽  
Peripheral Populations ◽  
Endemic Plant ◽  
Floral Trait ◽  
Ligurian Alps

AbstractGeographical limits of species’ distributions are assumed to be coincident with ecological margins, although this assumption might not always be true. Indeed, harsh environments such as Alpine and Mediterranean ecosystems may favour high phenotypic variability among populations, especially those in peripheral sites. Floral traits are often found to be less variable and less affected by environmental heterogeneity than vegetative traits because variation in the former may have negative effects on fitness. For this reason, it is important to quantify variation in floral traits and plant fecundity in study range limits. The objective of the study is to examine phenotypic variation and differences in reproduction in endemic Lilium pomponium in the Maritime and Ligurian Alps in relation to environmental variation across its distribution range. In this species, marginal climatic populations occur both in the peripheral and central geographical locations of the distribution range; hence, geographical and ecological gradients are not concordant. Floral trait variation is related to local environmental conditions with an array of interactions among resource availability, potential pollen limitation and population size that are differentially related to floral traits. Contrary to the general expectation, all central and peripheral populations had similar, moderate seed production with each group limited by different factors acting on different stages of the life-history strategy. Our results are in line with the idea that general expectations are confirmed only when its assumptions are met and that the differences in pollination environment along an environmental gradient may not be the main determinant of the distribution limit.

scholarly journals New record of the Midas free-tailed bat (Mops midas) from the Arabian Peninsula (Mammalia: Chiroptera)

2019 ◽  
Vol 188 (1) ◽  
pp. 147-150
Author(s):  
Petr Benda ◽  
Mohammed Shobrak ◽  
Jiří Šmíd
Keyword(s):  
Saudi Arabia ◽  
New Record ◽  
Arabian Peninsula ◽  
Distribution Range ◽  
Entire Distribution

Abstract A new record of the Midas free-tailed bat, Mops midas (Sundevall, 1843), from Saudi Arabia is presented. This new record is the northernmost occurrence point of this rare bat in Arabia (ca. 160 km NNW of the closest previous site) and also within its entire distribution range.

scholarly journals Environmental association modelling with loci under divergent selection predicts the distribution range of a lizard

2021 ◽  
Author(s):  
Alejandro Llanos-Garrido ◽  
Andrea Briega-Álvarez ◽  
Javier Pérez-Tris ◽  
José Díaz
Keyword(s):  
Genetic Variation ◽  
Environmental Gradient ◽  
Environmental Variation ◽  
Western Mediterranean ◽  
Distribution Range ◽  
Species Range ◽  
Adaptive Genetic Variation ◽  
Temperature And Precipitation ◽  
Psammodromus Algirus ◽  
Geographical Expansion

During geographical expansion of a species individual colonizers have to confront different ecological challenges, and the capacity of the species to broaden its range may depend on the total amount of adaptive genetic variation supplied by evolution. We set out to test whether the distribution of loci under selection along a contrasting environmental gradient can be turned into a model that accurately predicts a species’ range. If positive, this may shed light on the genetic source of adaptive limits that shape range boundaries. We sampled five populations of the western Mediterranean lizard Psammodromus algirus that inhabit a noticeable environmental gradient of temperature and precipitation. We used 21 SNPs putatively under selection to correlate the genotypes of 95 individuals with environmental variation among their populations, using 1x1 km2 grid cells as sampling units. By extrapolating the resulting model to all possible combinations of alleles, we inferred the locations that were theoretically suitable for the species. The inferred distribution range overlapped to a large extent with the realized range of the species, including an accurate prediction of internal gaps and range borders. Our results suggest an adaptability threshold determined by the amount of genetic variation available that would be required to warrant adaptation beyond a certain limit of environmental variation. These results support the idea that the expansion of a species’ range may be ultimately linked to the arising of new variants under selection.

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