Movement and Microhabitat Use of a Terrestrial Amphibian (Bufo marinus) on a Tropical Island: Seasonal Variation and Environmental Correlates

1999 ◽  
Vol 33 (2) ◽  
pp. 208 ◽  
Author(s):  
Frank Seebacher ◽  
Ross A. Alford
Keyword(s):  
Seasonal Variation ◽  
Bufo Marinus ◽  
Microhabitat Use ◽  
Tropical Island ◽  
Environmental Correlates

scholarly journals Environmental correlates for tree occurrences, species distribution and richness on a high-elevation tropical island

AoB Plants ◽  
2015 ◽  
Vol 7 ◽  
pp. plv075 ◽  
Author(s):  
Philippe Birnbaum ◽  
Thomas Ibanez ◽  
Robin Pouteau ◽  
Hervé Vandrot ◽  
Vanessa Hequet ◽  
...  
Keyword(s):  
Species Distribution ◽  
High Elevation ◽  
Tropical Island ◽  
Environmental Correlates

Breeding-site selection by cane toads (Bufo marinus) and native frogs in northern New South Wales, Australia

2007 ◽  
Vol 34 (1) ◽  
pp. 59 ◽  
Author(s):  
M. Semeniuk ◽  
F. Lemckert ◽  
R. Shine
Keyword(s):  
Site Selection ◽  
New South ◽  
New South Wales ◽  
Breeding Site ◽  
Northern Territory ◽  
Bufo Marinus ◽  
Microhabitat Use ◽  
Breeding Sites ◽  
South Wales ◽  
Spawning Sites

Previous research on cane toads (Bufo marinus) has documented non-random selection of breeding sites by this invasive species. In the wet–dry tropics of the Northern Territory, toads selected spawning sites in open areas with gently sloping banks and shallow water. If consistent, such biases may present opportunities for toad control via waterbody manipulation – but first we need to know whether such criteria for spawning-site selection (1) are consistent across other parts of the toad’s extensive Australian range, and (2) differ from those of native anurans breeding at the same waterbodies. We quantified the attributes of potential and actual spawning-sites in north-eastern New South Wales, in temperate-zone habitat where cane toads have been present for many decades; our study area thus differs in many ways from the previously studied tropical site. We compared habitat and water chemistry variables between 23 cane toad breeding sites and 23 nearby unused sites. To examine habitat use at an even finer scale, we conducted nocturnal surveys of microhabitat use by calling male toads and native anurans. Our results revealed that cane toads in this region were highly selective in their choice of breeding sites, and that the criteria they used in this respect were similar to those used by toads in the Northern Territory. Calling male cane toads also used microhabitats non-randomly within each pond, apparently based on similar criteria to those used when selecting among ponds. Toads differed significantly from native anurans in these respects, suggesting that it may be feasible to manipulate waterbody attributes to impact on invasive toads without disrupting reproduction by native anurans.

A Multiscale Characterization of Two Tropical Embiopteran Species: Nano- and Microscale Features of Silk, Silk-Spinning Behavior, and Environmental Correlates of their Distributions

2020 ◽  
Vol 49 (5) ◽  
pp. 1242-1251
Author(s):  
Samantha Shenoy ◽  
Keilyn Ing ◽  
Richard P Barber ◽  
Edward C Rooks ◽  
Janice S Edgerly
Keyword(s):  
The Other ◽  
Tropical Island ◽  
Silk Fibers ◽  
Body Form ◽  
Environmental Correlates ◽  
Unique Ability ◽  
Silk Spinning

Abstract Embioptera display the unique ability to spin silk with their front feet to create protective domiciles. Their body form is remarkably uniform throughout the order, perhaps because they all live within the tight confines of silken tubes. This study contributes to an understanding of the ecology of Embioptera, an order that is rarely studied in the field. We conducted a census to quantify the habitats of two species with overlapping distributions on the tropical island of Trinidad in a search for characteristics that might explain their distinct ecologies. One species, Antipaluria urichi (Saussure) (Embioptera: Clothodidae), lives in larger colonies with more expansive silk in habitats throughout the island, especially in the rainforest of the Northern Range Mountains. The other, Pararhagadochir trinitatis (Saussure) (Embioptera: Scelembiidae), was found only in lowland locations. We quantified silk-spinning behavior and productivity of the two species and found that A. urichi spins thicker silk sheets per individual and emphasizes spin-steps that function to create a domicile that is more expansive than that produced by P. trinitatis. Their silks also interact differently when exposed to water: the smaller-diameter silk fibers of P. trinitatis form more continuous films on the surface of the domicile after being wetted and dried than that seen in A. urichi silk. This tendency gives P. trinitatis silk a shiny appearance in the field compared to the more cloth-like silk of A. urichi. How these silks function in the field and if the differences are partially responsible for the distinct distributions of the two species remain to be determined.

Seasonal Variation in Thermal Ecology and Microhabitat Use of Anolis carlliebi (Squamata: Dactyloidae) from a Xeric Scrubland in Central Mexico

2021 ◽  
Vol 109 (2) ◽  
Author(s):  
César A. Díaz-Marín ◽  
Ricardo Luría-Manzano ◽  
Guadalupe Gutiérrez-Mayén ◽  
Aurelio Ramírez-Bautista
Keyword(s):  
Seasonal Variation ◽  
Central Mexico ◽  
Microhabitat Use ◽  
Thermal Ecology

Triassic sponges (Sphinctozoa) from Hells Canyon, Oregon

1988 ◽  
Vol 62 (03) ◽  
pp. 419-423 ◽  
Author(s):  
Baba Senowbari-Daryan ◽  
George D. Stanley
Keyword(s):  
Endemic Species ◽  
Upper Triassic ◽  
Island Arc ◽  
Tropical Island ◽  
The Family ◽  
Wallowa Terrane ◽  
Unique Condition ◽  
Hells Canyon

Two Upper Triassic sphinctozoan sponges of the family Sebargasiidae were recovered from silicified residues collected in Hells Canyon, Oregon. These sponges areAmblysiphonellacf.A. steinmanni(Haas), known from the Tethys region, andColospongia whalenin. sp., an endemic species. The latter sponge was placed in the superfamily Porata by Seilacher (1962). The presence of well-preserved cribrate plates in this sponge, in addition to pores of the chamber walls, is a unique condition never before reported in any porate sphinctozoans. Aporate counterparts known primarily from the Triassic Alps have similar cribrate plates but lack the pores in the chamber walls. The sponges from Hells Canyon are associated with abundant bivalves and corals of marked Tethyan affinities and come from a displaced terrane known as the Wallowa Terrane. It was a tropical island arc, suspected to have paleogeographic relationships with Wrangellia; however, these sponges have not yet been found in any other Cordilleran terrane.

Field test for environmental correlates of dispersal in hedgehogs Erinaceus europaeus

2001 ◽  
Vol 70 (1) ◽  
pp. 33-46 ◽  
Author(s):  
Doncaster C. Patrick ◽  
Rondinini Carlo ◽  
Johnson Paul C. D.
Keyword(s):  
Field Test ◽  
Erinaceus Europaeus ◽  
Environmental Correlates
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