Relevant bibliographies by topics / Tropical riparian vegetation

Academic literature on the topic 'Tropical riparian vegetation'

Author: Grafiati
Published: 14 March 2023

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Journal articles on the topic "Tropical riparian vegetation"

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França, Juliana Silva, Rener Silva Gregório, Joana D'Arc de Paula, José Francisco Gonçalves Júnior, Fernando Alves Ferreira, and Marcos Callisto. "Composition and dynamics of allochthonous organic matter inputs and benthic stock in a Brazilian stream." Marine and Freshwater Research 60, no. 10 (2009): 990. http://dx.doi.org/10.1071/mf08247.

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Riparian vegetation provides the nutrient and energy input that maintains the metabolism and biodiversity in tropical headwater streams. In the present study, it was hypothesised that ~30% of riparian plant species contribute over 70% of coarse particulate organic matter and, because tropical plants are perennial and semi-deciduous, it was expected that leaf fall would occur year round. The aims of the present study were to evaluate the composition and structure of the plant riparian zone and the input and associated benthic stock of organic matter. The riparian vegetation was composed of 99 taxa. The most abundant plant species were Tapirira obtusa, Sclerolobium rugosum, Croton urucurana, Byrsonima sp. and Inga sp. The input and benthic stock showed a seasonal pattern, with higher values recorded at the end of the dry season and at the beginning of tropical storms. The biomass contributed monthly by the vegetation ranged from 28 ± 6 g m–2 to 38 ± 11 g m–2, and the mean monthly benthic standing stock was 138 ± 57 g m–2. The results illustrate the importance of riparian vegetation as an energy source to tropical streams and how individual plant species contribute to organic matter inputs in these ecosystems.
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Beltrão, Gabriel de Barros Moreira, Elvio Sergio Figueredo Medeiros, and Robson Tamar da Costa Ramos. "Effects of riparian vegetation on the structure of the marginal aquatic habitat and the associated fish assemblage in a tropical Brazilian reservoir." Biota Neotropica 9, no. 4 (December 2009): 37–43. http://dx.doi.org/10.1590/s1676-06032009000400003.

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Riparian zones represent areas of strong biological, physical and chemical interaction between terrestrial and aquatic ecosystems. These areas are usually typified by high diversity of fauna, flora and environmental processes. The present study evaluates the littoral habitat structure and its fish fauna related to associations between presence and absence of natural riparian vegetal cover, in a reservoir in northeastern Brazil. Sampling was performed on marginal areas where riparian vegetation was present and where it had been removed for the plantation of sugar cane. For each type of marginal area three replicate sites were sampled during the wet season. Data on the habitat structure (submerged elements and substrate composition), fish and water quality were collected. The data was analyzed using Shannon-Wiener's diversity index and Pielou's equitability. Non-metric Multidimensional Scaling and the Multi-Response Permutation Procedure were used to evaluate similarities between sites. The structure of the habitat was more diverse in sites were natural riparian vegetation was still present. Muddy substrate was more abundant in areas with riparian vegetation whereas sandy substrate was more abundant in areas where riparian vegetation had been removed. Measured physico-chemical parameters and nutrients remained nearly constant across all sites. Metynnis lippincottianus and Crenicichla menezesi were more associated with the habitat in areas where riparian vegetation was removed, whereas Cichlasoma orientale and Cichla ocellaris were strongly correlated to forested areas.
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Medina-Abreo, María Elena, and Gonzalo Castillo-Campos. "Vegetación y listado florístico de la Barranca de Acazónica, Veracruz, México." Botanical Sciences, no. 53 (April 24, 2017): 73. http://dx.doi.org/10.17129/botsci.1417.

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A study of the flora and vegetation of the Barranca de Acazónica, located in the central part of the state of Veracruz, was under taken. The vegetation recognized for the region includes tropical deciduos forest, tropical semideciduos forest, riparian vegetation and secondary vegetation. A description of each vegetation type is given, with a brief discussion of environmental characteristics of the zone. A vegetation map of the region (scale 1:70000) is presented, with a schematic vegetation profile. About 840 species are reported in a floristic checklist, representing 126 families of vascular plants.
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Petty, Aaron M., and Michael M. Douglas. "Scale relationships and linkages between woody vegetation communities along a large tropical floodplain river, north Australia." Journal of Tropical Ecology 26, no. 1 (December 8, 2009): 79–92. http://dx.doi.org/10.1017/s0266467409990319.

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Abstract:Riparian vegetation varies according to hydrogeomorphic processes operating across different scales over two didmensions: transversely (across-stream) and longitudinally (parallel to stream). We tested the hypothesis that vegetation patterns reveal the scale and direction of underlying processes. We correlated patterns of dominant woody vegetation with environmental variables at 28 sites located within four geomorphologically distinct regions along the length of the South Alligator River catchment of Kakadu National Park, northern Australia. Across the catchment there existed a strong transverse boundary between upland savanna vegetation and two zones of riparian vegetation: Melaleuca-spp.-dominated closed-forest vegetation along stream channels and mixed open-woodland vegetation adjacent to closed forest. We surmise that there is hierarchic constraint on smaller-scale catchment processes due to fire incursion into the riparian zone and access to water during the dry season. Within the closed-forest zone, vegetation did not vary transversely, but did longitudinally. Riparian woodlands also varied longitudinally, but in the upper reaches varied independently of stream variables. By contrast, in the lower reaches woodland was strongly correlated with stream variables. The observed pattern of weak transverse linkages in headwaters but strong linkages in lower reaches is analogous to models developed for in-stream patterns and processes, particularly the river continuum and flood-pulse concepts.
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Gonçalves Júnior, José Francisco, Juliana Silva França, and Marcos Callisto. "Dynamics of allochthonous organic matter in a tropical Brazilian headstream." Brazilian Archives of Biology and Technology 49, no. 6 (November 2006): 967–73. http://dx.doi.org/10.1590/s1516-89132006000700014.

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The species composition of the riparian vegetation and the seasonal contribution of input and storage of fine and coarse particulate organic matter were assessed in a 3rd order stretch. Fourteen tree species in the riparian zone were identified, with 3 species contributing with 68% of total litter input: Miconia chartacea Triana (43%), Miconia cyathanthera Triana (16%) and Erythroxylum pelletarianum St. Hil (9%). The allochthonous input of coarse particulate organic matter (CPOM) was composed mainly by leaves (over 50%). Species composition and the contribution of each plant species biomass for vertical, lateral and soil inputs and benthic stocks varied along the study period. The maximum values found in September, November and December coincided with the beginning of the rainy season. There were no differences between the allochthonous vertical and lateral inputs of CPOM to the stream. Differently to other studies, this result was probably due to the peculiar composition of stream’s riparian vegetation at Serra do Cipó.
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Zarazúa-Carbajal, Mariana, Luis Daniel Avila-Cabadilla, Mariana Yólotl Alvarez-Añorve, Julieta Benítez-Malvido, and Kathryn E. Stoner. "Importance of riparian habitat for frugivorous bats in a tropical dry forest in western Mexico." Journal of Tropical Ecology 33, no. 1 (December 20, 2016): 74–82. http://dx.doi.org/10.1017/s0266467416000572.

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Abstract:Riparian forests (RF) provide shelter, feeding resources and commuting areas and are fundamental for local fauna during long drought periods in tropical dry forests. Nevertheless, information regarding vertebrate ecology in tropical RF is scarce. The studies of bats in riparian habitats have been mostly focused on insectivorous assemblages in non-tropical regions. We contrasted the occurrence of frugivorous bats between RF and upland dry forest (UDF) in a Neotropical dry forest region and evaluated how vegetation structure modulates frugivorous bat presence and abundance. We sampled bat ensembles and vegetation structure in three UDF and three RF sites in Jalisco, Mexico. Bat ensembles and populations were analysed with generalized linear models, including as independent factors: (1) habitat and (2) vegetation attributes. In 72 nights we captured 840 bats belonging to seven species. No effect of habitat type or vegetation structure on species richness was found, but habitat type did affect bat species composition and abundance. Moreover, vegetation structural traits affected frugivorous bat abundance. Frugivore abundance was higher in RF than in UDF probably because RF provides greater resources and more roosting sites. Riparian forests also present more canopy cover and accessible flight spaces. Our results support the importance of RF for frugivorous bats in terms of abundance and composition. Additionally, the lack of differences in species richness between UDF and RF highlights the importance of both habitats for maintaining frugivorous bats, as well as the related ecosystem processes and services in tropical dry forest landscapes.
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Adepoju, Kayode, Samuel Adelabu, and Olutoyin Fashae. "Vegetation Response to Recent Trends in Climate and Landuse Dynamics in a Typical Humid and Dry Tropical Region under Global Change." Advances in Meteorology 2019 (December 13, 2019): 1–15. http://dx.doi.org/10.1155/2019/4946127.

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The influence of global change on vegetation cover and processes has drawn increasing attention in the past few decades. In this study, we used remotely sensed rainfall and land surface temperature to investigate the spatiotemporal pattern and trend in vegetation condition using NDVI as proxy from 2001 to 2017 in a humid and dry tropical region. We also determined the partial correlation coefficient of temperature and rainfall with NDVI and the response of NDVI to changes in landcover categories due to human activities. We found that the mean annual maximum NDVI was 0.42, decreasing at a rate of 0.06 per decade. About 27.4% of the area was found to have experienced a significant negative trend in vegetation cover, while only 0.34% exhibited significant increasing vegetation vigour. Land surface temperature increased at a mean rate of 0.75°C/decade, with higher rates in agriculture, savanna, settlements, woodlands, and riparian vegetation than in forest and mangrove vegetations. Precipitation also reduced at a mean rate of 58.69 mm/decade, with higher rates in agriculture savanna and riparian vegetation than in sahelian grasslands, mangrove, forest, and woodlands. NDVI was negatively correlated with temperature in savanna, settlements, degraded forest, and sahelian grasslands providing confirmation of ongoing land degradation. It was concluded that vegetation vigour will continue to decline under rainfall and increasing temperature conditions especially in dryer regions. The use of land surface temperature in this study is particularly valuable in highlighting areas where changes in NDVI occurred as a result of synergistic action between climate and human-induced landcover changes. Our findings underscore the importance of landuse policies that account for spatial variation in synergistic relationships between the nexus of climate and land conversion processes that influence vegetation cover change in different landcover types in tropical regions.
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KUMAR, RAMAN, and GHAZALA SHAHABUDDIN. "Effects of biomass extraction on vegetation structure, diversity and composition of forests in Sariska Tiger Reserve, India." Environmental Conservation 32, no. 3 (September 2005): 248–59. http://dx.doi.org/10.1017/s0376892905002316.

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Despite the fact that tropical dry forests are being exploited on a large scale for various forest products, there has been limited evaluation of the accompanying ecological impacts. In particular, there is no information on the effects of widespread biomass extraction such as grazing and firewood collection. A study was carried out in Sariska Tiger Reserve in northern India, to investigate the effects of biomass extraction on forest vegetation composition, diversity and structure. Biomass extraction caused significant changes in forest vegetation structure and species composition in the tree layer but the extent of these changes varied across the three major vegetation types found in the Reserve. Anogeissus-dominated slope forest showed significantly lower mean canopy cover, tree density, tree basal area and height of trees in disturbed sites in comparison to undisturbed sites. Riparian forest showed lower mean canopy cover, tree basal areas and number of recorded tree species in disturbed sites. Scrub forest had lower mean canopy cover, tree basal area and tree height. There were fewer tall trees but greater number of short trees in disturbed sites of all three vegetation types. Girths of trees similarly shifted towards lower values in riparian and scrub forest. In Anogeissus-dominated forest, disturbed and undisturbed sites did not differ in proportions of trees in various girth-classes. Tree species richness was substantially lower in disturbed sites of Anogeissus-dominated and riparian forest in comparison to undisturbed sites, but was not affected by disturbance in scrub forest. Understorey species richness was higher in disturbed sites of all three vegetation types but understorey changed structurally only in Anogeissus-dominated forest. Overall tree and understorey species composition was significantly different between disturbed and undisturbed sites of Anogeissus-dominated forest, but was unchanged in scrub and riparian forest. Observed changes in vegetation structure, diversity and composition of the different vegetation types due to biomass extraction have implications for biodiversity conservation in tropical dry forest ecosystems, and need to be addressed in future forest management planning.
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Carvalho, EM, and VS Uieda. "Input of litter in deforested and forested areas of a tropical headstream." Brazilian Journal of Biology 70, no. 2 (April 2, 2010): 283–88. http://dx.doi.org/10.1590/s1519-69842010005000015.

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Riparian vegetation is the main source of leaves and the main energy source for low order streams. Therefore, changes in its composition affect the structure and processes in streams. We studied the contribution of the riparian vegetation by analysing the annual input of litter in deforested and forested areas of a tropical stream. The lateral, vertical (aerial) and horizontal (drift) litter inputs were analysed separately. The lateral input differed significantly between the two areas and included mostly fallen dry leaves. The vertical input, represented mainly by fallen dry leaves, occurred only in the forested area. The drift transport of litter was not significantly different between the deforested and forested areas and the input was composed mostly by CPOM. The removal of the native forest was clearly reflected in the low contribution of leaf litter in the deforested area.
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10

Moggridge, Helen L., and David L. Higgitt. "Interactions between riparian vegetation and fluvial processes within tropical Southeast Asia." Progress in Physical Geography: Earth and Environment 38, no. 6 (November 6, 2014): 716–33. http://dx.doi.org/10.1177/0309133314548745.

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Research on the interaction between vegetation and hydrological and geomorphological processes has made a significant advancement in river and floodplain research. While this work is strongly dominated, both conceptually and empirically, from studies in northern temperate systems, it has been instrumental in shaping understanding at a global scale. There are, however, regions of the world such as tropical Southeast Asia which have received relatively little research attention, but could offer an important contribution to knowledge in this field. In a first step to address this issue, this paper synthesizes current research on vegetation and geomorphology and hydrology within tropical Southeast Asia, to consider the applicability of current (temperate-based) models and the potential contribution that processes within these systems could make to global understanding. While research within the region is sparse, observations suggest a reciprocal relationship between vegetation and fluvial processes. While there are some synergies with temperate systems, processes within this region also present interesting differences which could, with further investigation, advance current understanding of these processes globally and expand and enhance current concepts. The paper concludes with the identification of the pertinent research questions for the field within the region.
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Book chapters on the topic "Tropical riparian vegetation"

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Victor Chukwuka, Azubuike, and Ozekeke Ogbeide. "Riparian-Buffer Loss and Pesticide Incidence in Freshwater Matrices of Ikpoba River (Nigeria): Policy Recommendations for the Protection of Tropical River Basins." In River Basin Management - Sustainability Issues and Planning Strategies. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.95521.

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The unregulated use of watersheds for agriculture negatively impacts the quality of river basins. In particular, the reduced quality of surface-waters, have been attributed to absence or poorly-decided riparian-buffer specifications in environmental laws. To demonstrate suitable buffer-width for protection of surface water, sediment and benthic fish populations, five riparian areas with different vegetation richness and buffer-width were selected within an organochlorine pesticide (OCP)-impacted watershed using the Normalized Differential Vegetation Index (NDVI) and multiple buffer analysis respectively. Mean OCP levels in surface water, sediment and fish sampled at each riparian stations showed site-specific differences with markedly higher levels of α-BHC, β-BHC, δ-BHC, p,p′-DDD and total pesticide residues at stations with least riparian cover. The principal component analysis further revealed more OCPs associating with sediment and fish from stations having smaller buffer-width and sparse riparian vegetation. Stations with wider buffer-width of at least 120 m provided greater protection to adjacent surface water and benthic fish populations. While this study recommends riparian buffer-widths for a typical tropical environment, further research which assesses other contaminant types in aquatic matrices adjacent to different riparian environments would be valuable and informative for regulatory guidance and strategic protection of ecosystem services.
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Conference papers on the topic "Tropical riparian vegetation"

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Costa, Ozeas, Eron Talles F. Costa, and Ricardo Barbieri. "EFFECTS OF URBANIZATION AND RIPARIAN VEGETATION DENSITY ON WATER QUALITY OF TWO TROPICAL, MACROTIDAL RIVERS." In GSA Connects 2021 in Portland, Oregon. Geological Society of America, 2021. http://dx.doi.org/10.1130/abs/2021am-367136.

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