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The mean richness of the open spaces was significantly lower than the mean richness of the gurvitch. Caatinga; Microhabitat; Microclima; Diversidade; Estrutura.

Cambridge University Press, The text covers a range of topics that you might find in a general ecology textbook, but with the focus on the interactions between plants and their environment over a range of scales.

Because of morphological characteristics exhibited by some species early in their ontogeny, some young herbaceous plants were mistaken as seedlings of woody species. Functional Ecology, London, v.

Therefore, not all islands had plots in the center. For individuals branched at soil level tillers without a visible common stalk base, the total diameter of the individual was calculated based on the diameters of gurrvitch tillers present. Thus, islands of perennial vegetation facilitate the establishment of herbaceous species.

In this study, ecoligia found that species richness, diversity, density, and height of the herbaceous community established in islands were higher than in open spaces. In this study, we found that the islands of perennial vegetation harbor, on average, greater species richness and greater diversity than open spaces, which confirms one of the hypotheses of this study.


In the plot interiors, all herbaceous individuals were counted, marked and measured for stalk height and diameter at soil level. The mean height of the individuals was higher in the center of the islands. A total of 51 species were recorded in the center and 55 on the edge of the islands and 48 in the open spaces. The diversity was greater in the vehetal of the islands and decreased significantly at the edge of the islands, and in the open spaces table 3.

Tim rated it really liked it Feb ecologiaa, The reproductive parts of all flowering herbaceous species in the interior of or near the plots were collected for taxonomic identification. Caatinga; Microhabitat; Microclimate; Diversity; Structure.

Princeton University Press, Ecological Engineering, Naples, v. The Shannon-Wiener diversity index H’ was calculated. Ten species formed more numerous populations in the center of the island; thirteen species formed more numerous populations at the edge of the island, and four species formed more numerous populations in the open spaces ta ble 1.

Theory of Island Biogeography. Abby Nichols rated it it was amazing Sep 27, Books by Jessica Gurevitch.

: Jessica Gurevitch: Books

Services on Demand Journal. The remaining species showed no preference for any of the three microhabitats. In the area, there was practically no superposition of the crowns of woody plants, which resulted in a discontinuous canopy forming islands of vegetation surrounded by land without woody vegetation and places with greater penetration of sunlight. SmAnadenanthera colubrina Vell. Be the first to ask a question about The Ecology of Plants. vegetsl

Jessica Gurevitch (Author of The Ecology of Plants)

Therefore, although this study has shown that the islands favor the establishment of a herbaceous community with greater richness, diversity, density and height than in open spaces, studies on microclimatic variations, nutrient cycling and accumulation of leaf-litter in the islands and in open spaces in consecutive years are needed to better understand the predictive power of these factors on the herbaceous community structure in islands and confirm that the relationship with the shrub-arboreal vegetation is facilitation or mutualism.


Exsiccates of species with problematic or dubious identification were sent to experts. Ecolgia to the systematic distribution of plots, 38 plots were installed at the edges of the islands and 27 plots in the center of the islands. The diversity was greater in the center of the island and became less on turevitch edge of the island and in the open spaces.

Only two species were unique to the center of the islands, three to the edge of the island, and one to the open spaces. Despite harboring a greater richness and diversity, the floristic similarity between the center and the edge of the islands and the open spaces was high.

The Ecology of Plants

Effect of the canopy of Retama sphaerocarpa on its understorey in a semiarid environment. The families with the largest number of species were Poaceae seven speciesMalvaceae six Euphorbiaceae fiveCleomaceae four and Convolvulaceae four.

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