Impact of Forest Fragmentation on Understory Plant Species Richness in Amazonia

Benítez‐Malvido, Julieta; Martı́nez-Ramos, Miguel

doi:10.1046/j.1523-1739.2003.01120.x

Cited by 211 publications

(184 citation statements)

References 43 publications

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“…Given these apparent advantages, Villagra & Romaniuc-Neto (2010) showed that even a small vegetation fragment, such as that evaluated in Itaberá, can harbor the same vine species richness as do large areas of contiguous forest. Therefore, the fragmented landscape is a factor that stimulates the presence of vines, not only at the edges, as described by different authors (Hora & Soares 2002;Benítez-Malvido & Martínez-Ramos 2003), but also in the forest interior. The fragment of Araucaria forest in Itaberá also features an extensive edge effect, with an abundance of bamboo-like plants, largely on the perimeter, where the study area borders agricultural land.…”

Section: Discussionmentioning

confidence: 96%

“…Therefore, species with the vine growth habit were more common at the location with a more seasonal climate (Itaberá), which can be attributed to their ecological characteristics. Due to the anatomical, ecological and physiological advantages that vines enjoy, at the expense of tree species in regeneration, the recruitment of vines in the forest understory is directly proportional to the seasonality of the local climate (Benítez-Malvido & Martínez-Ramos 2003;Schnitzer 2005).…”

Section: Discussionmentioning

confidence: 99%

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Structure of the understory community in four stretches of Araucaria forest in the state of São Paulo, Brazil

et al. 2014

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We analyzed the structure of the understory community in the Atlantic Forest sensu lato, for which phytosociological descriptions of the understory are lacking. We delineated 50 plots of 10 × 20 m each at four sites within an Araucaria forest (a subtype of Atlantic Forest), located in the municipalities of Bananal, Campos do Jordão, Itaberá and Barra do Chapéu, all of which are in the state of São Paulo, Brazil. To sample the resident species of the understory, we randomly selected five 1 × 1 m subplots within each plot, resulting in a total sampling area of 250 m 2 at each site. We identified differences among the locations, mostly due to proportional differences in growth forms, in terms of species richness and the importance values within the community. Factors potentially influencing the understory structure include macroclimatic and microclimatic conditions, as well as forest fragmentation, the abundance of deciduous trees in the canopy, the surrounding vegetation and geographic location.

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Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Structure of the understory community in four stretches of Araucaria forest in the state of São Paulo, Brazil

et al. 2014

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“…As a result, their diets typically deviate from the host species archetypical dietary regime and are likely to be associated with shifts in GI microbiome composition. Specifically, because habitat degradation leads to differences in available plant species and reductions in plant diversity (Benitez-Malvido and Martinez-Ramos, 2003;Vellend, 2003;Lindborg and Eriksson, 2004), we predict that howlers inhabiting disturbed habitats will exhibit signs of dysbiosis, such as lower microbial richness and diversity. If this is the case, then host nutrition and health may be negatively affected.…”

Section: Introductionmentioning

confidence: 99%

Habitat degradation impacts black howler monkey (Alouatta pigra) gastrointestinal microbiomes

et al. 2013

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The gastrointestinal (GI) microbiome contributes significantly to host nutrition and health. However, relationships involving GI microbes, their hosts and host macrohabitats remain to be established. Here, we define clear patterns of variation in the GI microbiomes of six groups of Mexican black howler monkeys (Alouatta pigra) occupying a gradation of habitats including a continuous evergreen rainforest, an evergreen rainforest fragment, a continuous semi-deciduous forest and captivity. High throughput microbial 16S ribosomal RNA gene sequencing indicated that diversity, richness and composition of howler GI microbiomes varied with host habitat in relation to diet. Howlers occupying suboptimal habitats consumed less diverse diets and correspondingly had less diverse gut microbiomes. Quantitative real-time PCR also revealed a reduction in the number of genes related to butyrate production and hydrogen metabolism in the microbiomes of howlers occupying suboptimal habitats, which may impact host health.

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“…Biodiversity is widely regarded as important for ecosystem function and services (Hooper et al 2005;Cardinale et al 2012), and consequently the observed loss of biodiversity over recent decades (Benitez-Malvido and Martinez-Ramos 2003;Stuart et al 2004;Dirzo et al 2014) has resulted in many efforts being made to preserve biodiversity. For example, actions have targeted the preservation of individual species (Teich et al 2005), the establishment of areas of conservation priority (Myers et al 2000) and the promotion of re-wilding at a continental scale (Navarro and Pereira 2012).…”

Section: Introductionmentioning

confidence: 99%

Pollen-vegetation richness and diversity relationships in the tropics

Gosling

Julier

Adu‐Bredu

et al. 2017

Veget Hist Archaeobot

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Tracking changes in biodiversity through time requires an understanding of the relationship between modern diversity and how this diversity is preserved in the fossil record. Fossil pollen is one way in which past vegetation diversity can be reconstructed. However, there is limited understanding of modern pollen-vegetation diversity relationships from biodiverse tropical ecosystems. Here, pollen (palynological) richness and diversity (Hill N 1 ) are compared with vegetation richness and diversity from forest and savannah ecosystems in the New World and Old World tropics (Neotropics and Palaeotropics). Modern pollen data were obtained from artificial pollen traps deployed in 1-ha vegetation study plots from which vegetation inventories had been completed in Bolivia and Ghana. Pollen counts were obtained from 15 to 22 traps per plot, and aggregated pollen sums for each plot were > 2,500. The palynological richness/diversity values from the Neotropics were moist evergreen forest = 86/6.8, semi-deciduous dry forest = 111/21.9, wooded savannah = 138/31.5, and from the Palaeotropics wet evergreen forest = 144/28.3, semi-deciduous moist forest = 104/4.4, forest-savannah transition = 121/14.1; the corresponding vegetation richness/diversity was 100/36.7, 80/38.7 and 71/39.4 (Neotropics), and 101/54.8, 87/45.5 and 71/34.5 (Palaeotropics). No consistent relationship was found between palynological richness/diversity, and plot vegetation richness/diversity, due to the differential influence of other factors such as landscape diversity, pollination strategy, and pollen source area. Palynological richness exceeded vegetation richness, while pollen diversity was lower than vegetation diversity. The relatively high global diversity of tropical vegetation was found to be reflected in the pollen rain.

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Impact of Forest Fragmentation on Understory Plant Species Richness in Amazonia

Cited by 211 publications

References 43 publications

Structure of the understory community in four stretches of Araucaria forest in the state of São Paulo, Brazil

Structure of the understory community in four stretches of Araucaria forest in the state of São Paulo, Brazil

Habitat degradation impacts black howler monkey (Alouatta pigra) gastrointestinal microbiomes

Pollen-vegetation richness and diversity relationships in the tropics

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