scholarly journals Effects of Habitat Structure, Plant Cover, and Successional Stage on the Bat Assemblage of a Tropical Dry Forest at Different Spatial Scales

Diversity ◽  
2018 ◽  
Vol 10 (2) ◽  
pp. 41 ◽  
Author(s):  
Luiz Falcão ◽  
Mário Espírito-Santo ◽  
G. Fernandes ◽  
Adriano Paglia
Keyword(s):  
Habitat Structure ◽  
Spatial Scales ◽  
Plant Cover ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Successional Stage

scholarly journals EFFECTIVE PRECIPTATION, SOIL LOSS AND PLANT COVER SYSTEMS IN THE CAATINGA BIOME, BRAZIL

2016 ◽  
Vol 29 (4) ◽  
pp. 956-965
Author(s):  
HELBA ARAÚJO DE QUEIROZ PALÁCIO ◽  
JACQUES CARVALHO RIBEIRO FILHO ◽  
JÚLIO CÉSAR NEVES DOS SANTOS ◽  
EUNICE MAIA DE ANDRADE ◽  
JOSÉ BANDEIRA BRASIL
Keyword(s):  
Water Depth ◽  
Soil Loss ◽  
Plant Cover ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Land Uses ◽  
Forest Region ◽  
Caatinga Biome ◽  
Cover Systems ◽  
Precipitation Events

ABSTRACT The objective of this work was to evaluate the influence of anthropic activities on the effective precipitation (eP) and soil loss in watersheds under different land uses in a tropical dry forest region. The experimental area was located in the central part of the State of Ceará, Brazil. The land uses evaluated were: fallow Caatinga (FC), thinned Caatinga (TC) and deforested Caatinga followed by a burning procedure and pasture cultivation (DBP). The areas were monitored in the rainy season (January to May, 2010), when 57 natural rainfalls occurred, totaling 941 mm of precipitation. The eP and sediment productions were quantified by the sum of all occurrences during the study period, and the soil loss was represented by suspended and dragged sediments. The eP was 15.13 mm and sediment produced was 167.81 kg ha-1 in FC conditions. The eP values was smaller (11.28 mm) in the watershed with TC, which had soil loss sum of 42.04 kg ha-1. The largest annual eP was found in the DBP area, with 112.88 mm yr-1 of accumulated water depth, which also showed the greater annual soil loss (3114.97 kg ha-1). The greatest interference of plant cover in the two variables evaluated occurred in the first precipitation events, when the plants were not yet fully developed.

Influence of landscape structure and stand age on species density and biomass of a tropical dry forest across spatial scales

2010 ◽  
Vol 26 (3) ◽  
pp. 355-370 ◽  
Author(s):  
J. Luis Hernández-Stefanoni ◽  
Juan Manuel Dupuy ◽  
Fernando Tun-Dzul ◽  
Filogonio May-Pat
Keyword(s):  
Landscape Structure ◽  
Spatial Scales ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Species Density ◽  
Stand Age ◽  
Density And Biomass

scholarly journals A universal scaling method for biodiversity-ecosystem functioning relationships

2019 ◽  
Author(s):  
K.E. Barry ◽  
G.A. Pinter ◽  
J.W. Strini ◽  
K. Yang ◽  
I.G. Lauko ◽  
...  
Keyword(s):  
Species Richness ◽  
Biomass Production ◽  
Ecosystem Functioning ◽  
Spatial Scales ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Additional Species ◽  
Spatial And Temporal Scales ◽  
Natural Systems ◽  
Species Area

SummaryGlobal biodiversity is declining at rates faster than at any other point in human history. Experimental manipulations of biodiversity at small spatial scales have demonstrated that communities with fewer species consistently produce less biomass than higher diversity communities. However, understanding how the global extinction crisis is likely to impact global ecosystem functioning will require applying these local and largely experimental findings to natural systems at substantially larger spatial and temporal scales. Here we propose that we can use two simple macroecological patterns – the species area curve and the biomass-area curve – to upscale the species richness-biomass relationship. We demonstrate that at local spatial scales, each additional species will contribute more to biomass production with increasing area sampled because the species-area curve saturates and the biomass-area curve increases monotonically. We use species-area and biomass-area curves from a Minnesota grassland and a Panamanian tropical dry forest to examine the species richness – biomass relationship at three and ten sampling extents, respectively. In both datasets, the observed relationship between biodiversity and biomass production at every sampling extent was predicted from simple species-area and biomass-area relationships. These findings suggest that macroecological patterns like the species-area curve underpin the scaling of biodiversity-ecosystem functioning research and can be used to predict these relationships at the global scales where they are relevant for species loss.

Diagnosis of the Environmental and Economic Social Sustainability of the Faita Enclosure of the Canton Quevedo-Ecuador

2017 ◽  
Vol 3 (03) ◽  
Author(s):  
Edith Lorena Escobar Morán ◽  
Moises Arturo Menacé Almea ◽  
Cesar Varas Maenza ◽  
Sandra Cecilia Muñoz Macias
Keyword(s):  
Cover Crops ◽  
Sustainability Assessment ◽  
Production Systems ◽  
Plant Cover ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Planted Forests ◽  
Tropical Fruit ◽  
Socioeconomic Environment ◽  
The Matrix

The aim of this study was to perform the agroecological diagnosis to determine the sustainability of agricultural production system Campus Faita of Quevedo Canton province of Los Rios Ecuador applying the matrix of Battelle Columbus for the characterization of the physical, abiotic, socioeconomic environment and which also it served to extract sustainability indicators to assess production systems Campus. Faita is in the tropical dry forest area where the predominant plant cover crops are planted forests and grass where there is almost no native vegetation. The average farm area is 5 hectares, production is diversified with a pattern of prevalent crops such as cocoa, tropical fruit mostly associated, timber cultivation and short cycle crops corn and soybeans. The economy of farmers is critical, although the average income in the area is within the official indexes. There are ecological and pollution by burning action, noise problems (97%), deforestation (98%) and especially by the aerial spraying of banana close, prolonged drought in the summer. The pressure on land use is moderate, subsistence production systems account for 49%. Sustainability Assessment qualifies as sustainable when discussing environmental or production indicators, but social and economic development is not sustainable where systems generally are not sustainable as it achieves an overall average of 55, 52%.

scholarly journals Effect of fragmentation on the Costa Rican dry forest avifauna

2016 ◽  
Author(s):  
Gilbert Barrantes ◽  
Diego Ocampo ◽  
José D. Ramírez-Fernández ◽  
Eric J Fuchs
Keyword(s):  
Forest Structure ◽  
Habitat Structure ◽  
Tropical Dry Forest ◽  
Bird Community ◽  
Costa Rican ◽  
Dry Forest ◽  
Forest Fragments ◽  
Northwestern Region ◽  
Species Area ◽  
Species Occupancy

Deforestation and land use change have reduced the tropical dry forest in the northwestern region of Costa Rica into isolated fragments. We examined the effect of fragment area and length of the dry season (seasonality) on nestedness for the community (entire species matrix), assemblages (forest fragments), and species occupancy across fragments for the native avifauna, and for a subset of forest dependent species. Area or distance between fragments did not correlate with species richness across fragments. Similarity in bird community composition between fragments was related with habitat structure; fragments with similar forest structure have higher similarity in their avifaunas. Fragment area determined the pattern of nestedness of the bird community and species occupancy, but not the nestedness of assemblages across fragments in northwestern Costa Rican avifauna. Forest dependent species (species that require large tracts of mature forest) and assemblages of these species were nested along forest fragments ranked by seasonality gradient, but only occupancy of species nested by fragment area.

scholarly journals Effect of fragmentation on the Costa Rican dry forest avifauna

2016 ◽  
Author(s):  
Gilbert Barrantes ◽  
Diego Ocampo ◽  
José D. Ramírez-Fernández ◽  
Eric J Fuchs
Keyword(s):  
Forest Structure ◽  
Habitat Structure ◽  
Tropical Dry Forest ◽  
Bird Community ◽  
Costa Rican ◽  
Dry Forest ◽  
Forest Fragments ◽  
Northwestern Region ◽  
Species Area ◽  
Species Occupancy

Deforestation and land use change have reduced the tropical dry forest in the northwestern region of Costa Rica into isolated fragments. We examined the effect of fragment area and length of the dry season (seasonality) on nestedness for the community (entire species matrix), assemblages (forest fragments), and species occupancy across fragments for the native avifauna, and for a subset of forest dependent species. Area or distance between fragments did not correlate with species richness across fragments. Similarity in bird community composition between fragments was related with habitat structure; fragments with similar forest structure have higher similarity in their avifaunas. Fragment area determined the pattern of nestedness of the bird community and species occupancy, but not the nestedness of assemblages across fragments in northwestern Costa Rican avifauna. Forest dependent species (species that require large tracts of mature forest) and assemblages of these species were nested along forest fragments ranked by seasonality gradient, but only occupancy of species nested by fragment area.

Spatiotemporal variation in phyllostomid bat assemblages over a successional gradient in a tropical dry forest in southeastern Brazil

2014 ◽  
Vol 30 (2) ◽  
pp. 123-132 ◽  
Author(s):  
Luiz Alberto Dolabela Falcão ◽  
Mário Marcos do Espírito-Santo ◽  
Lemuel Olívio Leite ◽  
Raphael Neiva Souza Lima Garro ◽  
Luis Daniel Avila-Cabadilla ◽  
...  
Keyword(s):  
Tropical Dry Forest ◽  
Spatiotemporal Variation ◽  
Dry Forest ◽  
Southeastern Brazil ◽  
Successional Stage ◽  
Future Studies ◽  
Eastern Brazil ◽  
Successional Gradient ◽  
Successional Stages ◽  
Landscape Level

Abstract:The aim of this study was to investigate the spatiotemporal variation in richness, abundance, structure and composition of phyllostomid bats over a successional gradient in a tropical dry forest in south-eastern Brazil. Four successional stages (pasture, early, intermediate and late) were sampled in the northern part of the state of Minas Gerais. Bats were sampled using mist nets at three sites for each of the four successional stages (12 sites in total) during eight periods between 2007 and 2009. A total of 537 individuals were captured (29 recaptured), distributed among four families and 22 species. Bat abundance and richness varied in space, being higher in the late-successional stage, and over time, being significantly lower during the dry season. When compared between guilds, only the abundance of omnivores varied significantly during the sampled months. Our results demonstrate that areas of late-successional stages showed higher bat richness and abundance in comparison with areas undergoing secondary succession. Our results also suggest the use of early-successional areas as flying routes by bats can lead to failure to detect differences in bat composition within successional gradients. We suggest future studies should assimilate landscape-level analyses into their studies to better evaluate the effects of successional gradients on bat assemblages.

scholarly journals Hymenochaete cifuentesii, H. potosina, and H. raduloides spp. nov. from the tropical dry forest of Mexico

Mycotaxon ◽  
2018 ◽  
Vol 133 (3) ◽  
pp. 499-512 ◽  
Author(s):  
Magdalena Contreras-Pacheco ◽  
Ricardo Valenzuela ◽  
Tania Raymundo ◽  
Leticia Pacheco
Keyword(s):  
Tropical Dry Forest ◽  
Dry Forest

Dynamic seed zones to guide climate-smart seed sourcing for tropical dry forest restoration in Colombia

2021 ◽  
Vol 490 ◽  
pp. 119127
Author(s):  
Tobias Fremout ◽  
Evert Thomas ◽  
Kelly Tatiana Bocanegra-González ◽  
Carolina Adriana Aguirre-Morales ◽  
Anjuly Tatiana Morillo-Paz ◽  
...  
Keyword(s):  
Forest Restoration ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Seed Zones ◽  
Dry Forest Restoration ◽  
Seed Sourcing
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