Responses of tropical forest herpetofauna to moderate anthropogenic disturbance and effects of natural habitat variation in Sulawesi, Indonesia

2015 ◽  
Vol 192 ◽  
pp. 161-173 ◽  
Author(s):  
Graeme R. Gillespie ◽  
Sam Howard ◽  
James T. Stroud ◽  
Adinggar Ul-Hassanah ◽  
Mary Campling ◽  
...  
Keyword(s):  
Tropical Forest ◽  
Anthropogenic Disturbance ◽  
Natural Habitat ◽  
Habitat Variation

scholarly journals When parks work: Effect of anthropogenic disturbance on occupancy of tropical forest mammals

2020 ◽  
Vol 10 (9) ◽  
pp. 3881-3894
Author(s):  
Valentina Oberosler ◽  
Simone Tenan ◽  
Elise F. Zipkin ◽  
Francesco Rovero
Keyword(s):  
Tropical Forest ◽  
Anthropogenic Disturbance ◽  
Work Effect

Endemic climbing cavy Kerodon acrobata (Rodentia: Caviidae: Hydrochoerinae) from dry forest patches in the Cerrado domain: new data on distribution, natural history, and morphology

Zootaxa ◽  
2019 ◽  
Vol 2724 (1) ◽  
pp. 29 ◽  
Author(s):  
ALEXANDRA M. R. BEZERRA ◽  
CIBELE R. BONVICINO ◽  
ALBERT A. N. MENEZES ◽  
JADER MARINHO-FILHO
Keyword(s):  
Natural History ◽  
Tropical Forest ◽  
Natural Habitat ◽  
Sensu Stricto ◽  
Dry Forest ◽  
Forest Patches ◽  
Seasonally Dry Tropical Forest ◽  
Dry Tropical Forest ◽  
Seasonally Dry ◽  
Hunting Activity

The distribution, natural history, and morphology of Kerodon acrobata were updated based on nine new collected specimens totalling 14 known specimens. Two new localities were added to the distribution range of this species. Data on habitat use indicated that the presence of this rodent is associated to the cerrado sensu stricto and seasonally dry tropical forest patches in the northeastern Cerrado domain. Analyses of these specimens increased the range of body size and craniodental measurements for K. acrobata. We also describe, for the first time, phallic morphology of K. acrobata which exhibits a subcylindral glans penis and a simple baculum. High hunting activity and continuous loss of its natural habitat are factors that can be negatively affecting its populations. Habitat replacement poses a likely risk the present diversity at seasonally dry tropical forest enclaves of the northeastern Cerrado domain.

scholarly journals Cross-Scale Responses of Biodiversity to Hurricane and Anthropogenic Disturbance in a Tropical Forest

Ecosystems ◽  
2007 ◽  
Vol 10 (5) ◽  
pp. 824-838 ◽  
Author(s):  
Michael R. Willig ◽  
Christopher P. Bloch ◽  
Nicholas Brokaw ◽  
Christopher Higgins ◽  
Jill Thompson ◽  
...  
Keyword(s):  
Tropical Forest ◽  
Anthropogenic Disturbance

scholarly journals The Creation of Protected Ecosystems as the Conservation-Friendly Way to Save Genus Begonia from Extinction

2021 ◽  
Vol 3 (1) ◽  
pp. 164-168
Author(s):  
Nabieva A.Yu. ◽  
Fershalova T.D.
Keyword(s):  
Environmental Factors ◽  
Tropical Forest ◽  
In Vitro Regeneration ◽  
Natural Habitat ◽  
Species Conservation ◽  
Female Flower ◽  
Botanical Garden ◽  
Vigorous Growth ◽  
Microclimate Conditions

The unique protected ecosystems created by the Central Siberian Botanical Garden (CSBG) researchers on the basis of ecological – geographical principle allowed the establishment of exact soil and microclimate conditions, favorable to the vigorous growth of many terrestrial Begonias. Begonias are successfully introduced in the CSBG as an understorey component of the pluristratal tropical forest and well adapted to the shady, humid conditions. Maintenance of rich Begoniaceae collection was based on the concept of imaging the natural habitat of the Begonias to determine environmental factors such as illuminance, temperature, humidity and substrate preference. In vitro regeneration of 4 Begonia genotypes was carried out starting from female flower segments and peduncles as explants. These regenerants have a better capability to grow than traditionally obtained ones and their flowers developed to anthesis in vitro. The techniques open a new way for an efficient micropropagation protocol for Begonia species conservation in vitro.

scholarly journals The role of anthropogenic disturbance and invasion of yellow crazy ant in a recent decline of land crab population

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ching-Chen Lee ◽  
Ming-Chung Chiu ◽  
Chun-Han Shih ◽  
Chin-Cheng Scotty Yang ◽  
Hung-Chang Liu ◽  
...  
Keyword(s):  
Anthropogenic Disturbance ◽  
Natural Habitat ◽  
Additive Model ◽  
Land Crab ◽  
Land Crabs ◽  
Breeding Migration ◽  
Survey Results ◽  
Natural Spring ◽  
Study Sites

AbstractThe yellow crazy ant, Anoplolepis gracilipes was first reported in Kenting National Park, Taiwan, in the 2000s, raising the concern of this invasive ant’s potential effects on the native land crab populations. We investigated the distribution and abundance of A. gracilipes and its adverse effect on the land crab populations at four land crab hotspots within the park. Our survey results indicated that A. gracilipes was widespread and abundant at three of the study sites (Hsiangchiaowan, Shadao, and Natural Spring), while the distribution was much more confined at the fourth site (Houwan). Land crab populations experienced a notable decline at all the study sites except Houwan, indicating an inverse relationship between the population of land crabs and distribution/abundance of A. gracilipes. Combining the results of visual observations, the decline of land crab populations can be attributed, at least partially, to direct attacks by A. gracilipes on land crabs in their natural habitat and during the breeding migration season. Generalized additive model showed that worker abundance of this ant is associated with human disturbance levels, suggesting that anthropogenic disturbance may have contributed to the decline in land crab populations via promoting the abundance of A. gracilipes.

Effect of Iron Limitation on the Ultrastructure of Agmenellum Quadruplicatum

1981 ◽  
Vol 39 ◽  
pp. 410-411
Author(s):  
L. P. Hardie ◽  
D. L. Balkwill ◽  
S. E. Stevens
Keyword(s):  
Growth Medium ◽  
Green Alga ◽  
Natural Habitat ◽  
Iron Limitation ◽  
Natural Environments ◽  
Blue Green Alga ◽  
Marine Cyanobacterium ◽  
Natural Systems ◽  
Thin Sectioning ◽  
Agmenellum Quadruplicatum

Agmenellum quadruplicatum is a unicellular, non-nitrogen-fixing, marine cyanobacterium (blue-green alga). The ultrastructure of this organism, when grown in the laboratory with all necessary nutrients, has been characterized thoroughly. In contrast, little is known of its ultrastructure in the specific nutrient-limiting conditions typical of its natural habitat. Iron is one of the nutrients likely to limit this organism in such natural environments. It is also of great importance metabolically, being required for both photosynthesis and assimilation of nitrate. The purpose of this study was to assess the effects (if any) of iron limitation on the ultrastructure of A. quadruplicatum. It was part of a broader endeavor to elucidate the ultrastructure of cyanobacteria in natural systemsActively growing cells were placed in a growth medium containing 1% of its usual iron. The cultures were then sampled periodically for 10 days and prepared for thin sectioning TEM to assess the effects of iron limitation.

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