(This exercise is based on Klein, B. C. 1989. Effects of forest fragmentation on

Question

(This exercise is based on Klein, B. C. 1989. Effects of forest fragmentation on aung ana am communities in central Amazonia. Ecology 70: 1715-1725.) 2 5 he equilibrium theory of island biogeography was developed to explain the mechanisms behind vari The species number typically arise from the immigration, the number of species increases on an island. on oceanic islands of various sizes and distances from mainland sources. Oceanic islands ocean with no terrestrial species on them. Over time, through the process of However, islands can be defined in a broad sense to be any sort of habitat completely surrounded by a less preferred type of habitat. Consider an island created from once-continuous good habitat, by natural or anthropogenic effects. If species number is already high, how will it change after the island is created? In addition to these sorts of questions that concerm conservation biologists faced with rapid habitat degradation and change. effects on community richness and diversity, are there effects on ecosystem function as well? It is ment to answer questions about the effects of forest fragmentation and loss of An ambitious ecological experi biodiversity in tropical rainforest habitats, called the Biological Dynamics of Forest Fragments Project (BDFFP), was begun in 1979 north of Manaus, Brazil. The original design included creating forest fragments of ferent sizes ( ha, 10, ha, and 100 ha), and following patterns of community diversity and system function dif through time. Early on, most studies documented effects on bird assemblages. The paper by B. C. Klein was one of the first papers to focus on insects and to include measures of ecosystem f this paper to explore the effects of forest fragmentation on species richness of dung and carrion beetles, and on. decomposition rates-an important ecosystem function. Questions Klein sampled dung and carrion beetles in clear-cut forest, 1-ba and 10-ha fragments, and contiguous forest 2 to 6 years after the fragments had been created. Dung beetles and carrion beetles of the subfamily Scarabaeinase comprise a well-defined guild of beetles that bury dung or carrion as food sources for their offispring. These insects are important contributors to soil nutrient cycling and seed dispersal. Section 1 Consider Table 3 from the paper below. It shows estimates of dung- and carrion-feeding beetle richness diversity in each of the four habitat types. and Wia re hStrends of ede mumbers, itnes and disenity in the four habitas? How dos forest fagnen size affect richness and diversity

Explanation / Answer

SECTION 1

Question no1. From the data provid in the table 3 we can find out the trends of beetle number,richness,diversity in the four habitats(clearcut forest,1-ha fragments,10-ha fragments,contiguous forest)

?Question no2.Richness and diversity of species does not give similar rankings among different habitats.

?Question no3.In the four different habitats the species diversity is gradually increase.Basically the number of species increasing with different habitats.

By the theory of Island Biogeography we can easily interpret the following situation.The number of species increase in different habitats may be by immigration of the species.It is only a satisfying cause of the diversity of the species among the different habitats.

Related Questions

Navigate

• Browse (All)
• Browse #
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.