“Identifying translocation sites for a climate relict population of Finescale Dace ( Chrosomus neogaeus )”

2021 ◽  
Author(s):  
Evan C.J. Booher ◽  
Annika W. Walters
Keyword(s):  
Relict Population

scholarly journals A relict population of Cymbalophora rivularis on the Pollino Massif, southern Italy (Lepidoptera: Erebidae)

2018 ◽  
pp. 37-41
Author(s):  
Silvia Greco ◽  
Francesco Luigi Leonetti ◽  
Stefano Scalercio
Keyword(s):  
Plant Species ◽  
National Park ◽  
Southern Italy ◽  
First Record ◽  
South Italy ◽  
Refuge Area ◽  
Relict Populations ◽  
Relict Population ◽  
A Site ◽  
First Time

The first record for South Italy of Cymbalophora rivularis (Ménétriès, 1832) is reported, until now recorded in Italy only for Central Apennine. Three specimens were collected during August-September 2017, in an Acer spp. forest located on Monte Sparviere, a Site of Community Importance within the Pollino National Park. Furthermore, this species was successfully barcoded for the first time. This finding reinforces the biogeographic importance of Pollino Massif as refuge area for relict populations of several animal and plant species.

scholarly journals Status of the relict population of the Critically Endangered Madagascar spider tortoise Pyxis arachnoides

Oryx ◽  
2012 ◽  
Vol 46 (3) ◽  
pp. 457-463 ◽  
Author(s):  
Ryan C. J. Walker ◽  
Tsilavo H. Rafeliarisoa
Keyword(s):  
Protected Areas ◽  
Distance Sampling ◽  
Habitat Destruction ◽  
Species Range ◽  
Line Transect ◽  
Anthropogenic Pressures ◽  
Community Based Conservation ◽  
Relict Population ◽  
Distance Model ◽  
C 71

AbstractThe Madagascar spider tortoise Pyxis arachnoides is endemic to the coastal dry forests of south-west Madagascar. In recent years its range has been reduced by c. 71%, with the species now confined to eight fragmented populations occupying a total of 2,464 km2. These remaining populations are facing a significant threat of extinction because of habitat destruction and other anthropogenic pressures. We developed methodology for a line transect distance sampling survey and applied it systematically across the species' range. The resulting distance model estimated a mean density of 226.9 tortoises km−2 (95% confidence interval, CI, 168.1–306.3) and a total population of 664,980 (95% CI 492,680–897,550). Fragmentation of the species’ range suggests the current population could be <30% of the historical population. Of the remaining population 73.5% falls within protected areas. However, nine of these 12 protected areas are designated as IUCN category III, V or VI parks, allowing some extractive activities to be undertaken. The most effective strategy for the conservation of P. arachnoides would be to reduce the threats to this species and its habitat, and to develop and expand the current community-based conservation and poverty alleviation programmes in the region.

scholarly journals Comments on Local cod (Gadus morhua) revealed by egg surveys and population genetic analysis after longstanding depletion on the Swedish Skagerrak Coast by Svedäng et al.

2019 ◽  
Vol 76 (4) ◽  
pp. 1209-1211 ◽  
Author(s):  
Massimiliano Cardinale ◽  
Stefano Mariani ◽  
Joakim Hjelm
Keyword(s):  
Genetic Analysis ◽  
Population Genetic ◽  
Gadus Morhua ◽  
Genetic Data ◽  
Scientific Basis ◽  
Coastal Ecosystems ◽  
Genotype Data ◽  
Demographic Expansion ◽  
Population Genetic Analysis ◽  
Relict Population

Abstract Svedäng et al. (2018) concluded that “the occurrence of locally spawned cod eggs suggests that spawning on the Swedish Skagerrak coast takes place, which belong to either a coastal subpopulation that is a remnant stock of a once much larger cod population, or a newly formed subpopulation that is now successfully inhabiting the coastal ecosystems along the Swedish Skagerrak coast”. However, after carefully reviewing the results and the data presented by the authors, we were no longer convinced that the information presented provided enough evidence for a local, distinct, coastal cod population in the Swedish Skagerrak. Thus, we requested the original genotype data, which the authors kindly provided to us. This allowed us to explore the substructure of these samples further using STRUCTURE 2.3.2. Re-analysis of the data consistently rejects the existence of an independent coastal Swedish stock in contrast with Svedäng et al. (2018) conclusions. We acknowledge the observation of cod spawning in the area but, based on re-analysis of the original genetic data of Svedäng et al. (2018), we currently lack the scientific basis to assume the existence of established local stocks, and even less the demographic expansion of an older, relict population in the area.

scholarly journals EVOLUTIONARY STATUS OF A RELICT POPULATION OF BUFO HEMIOPHRYS COPE

Evolution ◽  
1968 ◽  
Vol 22 (3) ◽  
pp. 583-594 ◽  
Author(s):  
Kenneth R. Porter
Keyword(s):  
Evolutionary Status ◽  
Relict Population

On the Occurrence and Feeding Habits of the False Smooth Snake Macroprotodon cucullatus (Geoffroy, 1827) in Portugal (Serpentes: Colubridae)

1986 ◽  
Vol 7 (1) ◽  
pp. 75-81 ◽  
Author(s):  
Francisco Ferrand de Almeida ◽  
Nuno Ferrand de Almeida
Keyword(s):  
Feeding Habits ◽  
The South ◽  
The North ◽  
Relict Population

AbstractUntil today the False Smooth Snake (Macroprotodon cucullatus) was referred to as occurring to the south of the river Tagus and in Lisbon's region. In this paper we describe two specimens of this species captured recently to the north of the river Douro. We succintly characterize the region where they were found and the local herpetocoenosis. A few considerations are made about the feeding habits of the snake, and we discuss the hypothesis of these two new specimens forming part of a relict population.

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