scholarly journals Population estimates for tidal marsh birds of high conservation concern in the northeastern USA from a design-based survey

The Condor ◽  
2016 ◽  
Vol 118 (2) ◽  
pp. 274-288 ◽  
Author(s):  
Whitney A. Wiest ◽  
Maureen D. Correll ◽  
Brian J. Olsen ◽  
Chris S. Elphick ◽  
Thomas P. Hodgman ◽  
...  
Keyword(s):  
Tidal Marsh ◽  
Population Estimates ◽  
Marsh Birds ◽  
High Conservation ◽  
Conservation Concern ◽  
Northeastern Usa

Evidence of sodium limitation in ants and termites in a Neotropical savanna

2022 ◽  
pp. 1-8
Author(s):  
Natalie A. Clay ◽  
Donald B. Shepard ◽  
Adrian A. Garda ◽  
Daniel O. Mesquita ◽  
Alexandre Vasconcellos
Keyword(s):  
Mass Loss ◽  
Strong Evidence ◽  
Decomposition Rate ◽  
Nutritional Ecology ◽  
Neotropical Savanna ◽  
Nacl Concentration ◽  
Neotropical Savannas ◽  
High Conservation ◽  
Type Water ◽  
Conservation Concern

Abstract Nutritional ecology of ropical ecosystems like Neotropical savannas, which are of high conservation concern, is understudied. Sodium is essential for heterotrophs but availability often falls short relative to plant consumer requirements. Savanna plant consumers like ants and termites should be sodium-limited due to high temperatures, nutrient-poor soils, and lack of oceanic sodium deposition. We tested the hypothesis that Neotropical savanna ants and termites are sodium-limited. Termites were tested by supplementing 0.25 m2 plots with H2O (control), 0.1%, 0.5%, or 1.0% NaCl and measuring termite presence and artificial substrate mass loss after 1 week. Ants were tested by collecting ants that recruited to H2O (control), 0.1%, 0.5%, and 1.0% NaCl and 1.0%, 10%, and 20% sugar baits on paired diurnal–nocturnal transects. Termites were 16 times more likely to occur on 1% NaCl than H2O plots and wood-feeding termites were most frequent. However, the decomposition rate did not differ among treatments. Ant bait use increased with increasing NaCl concentration and 1% NaCl usage was similar to sugar bait usage. Ants were 3.7 times more active nocturnally than diurnally, but contrary to predictions bait type (water, sugar or NaCl) usage did not differ between day and night. Together, these results provide strong evidence of sodium limitation in Neotropical savannas.

Ecological specialization is associated with high conservation concern in skates (Chondrichthyes, Rajiformes)

2020 ◽  
Vol 23 (2) ◽  
pp. 222-228
Author(s):  
S. A. Barbini ◽  
L. O. Lucifora ◽  
D. E. Sabadin ◽  
D. E. Figueroa
Keyword(s):  
Ecological Specialization ◽  
High Conservation ◽  
Conservation Concern

scholarly journals Counting complete? Finalising the plant inventory of a global biodiversity hotspot

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e2984 ◽  
Author(s):  
Martina Treurnicht ◽  
Jonathan F. Colville ◽  
Lucas N. Joppa ◽  
Onno Huyser ◽  
John Manning
Keyword(s):  
Growth Form ◽  
Biodiversity Loss ◽  
Cape Floristic Region ◽  
Species Discovery ◽  
Strategic Plans ◽  
Steady Rate ◽  
High Conservation ◽  
Global Biodiversity ◽  
Conservation Concern ◽  
Species Descriptions

The Cape Floristic Region—the world’s smallest and third richest botanical hotspot—has benefited from sustained levels of taxonomic effort and exploration for almost three centuries, but how close is this to resulting in a near-complete plant species inventory? We analyse a core component of this flora over a 250-year period for trends in taxonomic effort and species discovery linked to ecological and conservation attributes. We show that >40% of the current total of species was described within the first 100 years of exploration, followed by a continued steady rate of description. We propose that <1% of the flora is still to be described. We document a relatively constant cohort of taxonomists, working over 250 years at what we interpret to be their ‘taxonomic maximum.’ Rates of description of new species were independent of plant growth-form but narrow-range taxa have constituted a significantly greater proportion of species discoveries since 1950. This suggests that the fraction of undiscovered species predominantly comprises localised endemics that are thus of high conservation concern. Our analysis provides important real-world insights for other hotspots in the context of global strategic plans for biodiversity in informing considerations of the likely effort required in attaining set targets of comprehensive plant inventories. In a time of unprecedented biodiversity loss, we argue for a focused research agenda across disciplines to increase the rate of species descriptions in global biodiversity hotspots.

An interactive identification key for genets and oyans (Carnivora, Viverridae, Genettinae, Genetta spp. and Poiana spp.) using Xper2

Zootaxa ◽  
2008 ◽  
Vol 1717 (1) ◽  
pp. 39 ◽  
Author(s):  
PHILIPPE GAUBERT ◽  
ANTOINE CHALUBERT ◽  
GUILLAUME DUBUS
Keyword(s):  
Identification Key ◽  
Species Discrimination ◽  
Species Pair ◽  
Taxonomic Description ◽  
Distribution Ranges ◽  
Knowledge Platform ◽  
High Conservation ◽  
Qualitative Characters ◽  
Conservation Concern ◽  
User Friendly

We built an interactive identification key (IIK) to provide a user-friendly tool for the problematic identification of the Genettinae species (Genetta spp. and Poiana spp.) using Xper², a knowledge platform dedicated to taxonomic description and identification. A total of 45 qualitative characters were described after the observation of > 4500 specimens, representing 19 species. Assessing among-species discrimination efficiency per character partition and character, we were able to establish a list of 13 characters from skull and coat likely to optimize species identification among Genettinae. Genetta maculata and G. “letabae”, which belong to the large-spotted genet complex, was the only species pair that could not be distinguished. The IIK of Genettinae we propose herein (http://lis.snv.jussieu.fr/apps/xper/data/genettes/ web/) may be used to assist regular-basis update of distribution ranges, a needed effort for several poorly known species of high conservation concern.

scholarly journals Modeling climate change impacts on tidal marsh birds: Restoration and conservation planning in the face of uncertainty

Ecosphere ◽  
2013 ◽  
Vol 4 (4) ◽  
pp. art49 ◽  
Author(s):  
Samuel D. Veloz ◽  
Nadav Nur ◽  
Leonardo Salas ◽  
Dennis Jongsomjit ◽  
Julian Wood ◽  
...  
Keyword(s):  
Climate Change ◽  
Conservation Planning ◽  
Tidal Marsh ◽  
Climate Change Impacts ◽  
Marsh Birds ◽  
The Face

A Pleistocene disturbance event describes modern diversity patterns in tidal marsh birds

Ecography ◽  
2017 ◽  
Vol 41 (4) ◽  
pp. 684-694
Author(s):  
Maureen D. Correll ◽  
Whitney A. Wiest ◽  
Thomas P. Hodgman ◽  
Joseph T. Kelley ◽  
Brian J. Mcgill ◽  
...  
Keyword(s):  
Tidal Marsh ◽  
Diversity Patterns ◽  
Marsh Birds

Occupancy of select marsh birds within northern Gulf of Mexico tidal marsh: current estimates and projected change

Wetlands ◽  
2009 ◽  
Vol 29 (3) ◽  
pp. 798-808 ◽  
Author(s):  
Scott A. Rush ◽  
Eric C. Soehren ◽  
Mark S. Woodrey ◽  
Courtney L. Graydon ◽  
Robert J. Cooper
Keyword(s):  
Gulf Of Mexico ◽  
Tidal Marsh ◽  
Marsh Birds ◽  
Northern Gulf Of Mexico ◽  
Projected Change

scholarly journals Avian Community Structure as a Function of Season, Habitat Type, and Disturbance, in Mole National Park, Northern Region (Ghana)

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
Collins Ayine Nsor ◽  
Emmanuel Acquah ◽  
Grace Mensah ◽  
Vincent Kusi-Kyei ◽  
Samuel Boadi
Keyword(s):  
Habitat Preference ◽  
National Park ◽  
Habitat Preferences ◽  
Habitat Type ◽  
Northern Region ◽  
Point Count ◽  
Ordination Techniques ◽  
Bird Habitat ◽  
High Conservation ◽  
Conservation Concern

The study assessed factors that influenced bird-habitat preference, diversity, and spatial distribution in Mole National Park. Birds were identified using point count sampling method, while ordination techniques were performed to determine the influence of environmental factors on bird-habitat preference. A total of 4951 individuals belonging to 131 species were identified across the four habitat types in the wet (n= 3033) and dry (n= 1648) seasons. Despite the high abundance and richness of birds in the woodland and shrubland habitats, grassland habitat was the most diverse, due to the high spatial evenness distribution of the birds. Bushfire, patchiness, and animal trampling were the key environmental determinants in bird assemblages and habitat preferences and accounted for 62.02% and 81.82% variations in the two seasons. Rarer birds like White-Backed Vulture (NT) and White-Headed Vulture (CR), Bateleur Eagle (NT), and Woolly-Necked Stork (VU), with high conservation concern, suggest intensification of conservation effort, while the dominance of Sahel Bush-sparrow was probably due to their broad range habitat preferences and ability to adapt to environmental conditions across these habitats. These species could be used as indicators of habitat quality, if future scenarios restrict their movement or distribution in narrow range habitats.

High uncertainty over the future of tidal marsh birds under current sea-level rise projections

2021 ◽  
Author(s):  
Brian T. Klingbeil ◽  
Jonathan B. Cohen ◽  
Maureen D. Correll ◽  
Christopher R. Field ◽  
Thomas P. Hodgman ◽  
...  
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Tidal Marsh ◽  
Marsh Birds ◽  
The Future ◽  
High Uncertainty
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