OCBIL Theory Of Biodiversity
There has been a noted decline in biodiversity across all regions of the world, which includes faunal diversity and floral diversity (Holmes, 2012). Biodiversity is important in maintaining the functioning of all existing ecosystems, which then renders certain ecosystem services to all living things (Myers et al., 2000). In trying to combat the issue of biodiversity loss, various studies have been undertaken to identify the best way to conserve as well debates on what is worth conserving more than the other (Cowling et al., 2002). The various studies came up with different methods of conservation, which include conservation at a species level, community level, conserving rare and endemic species as well conservation based on landscapes (Holmes, …show more content…
The 7 hypotheses include; reduced dispersability thus resulting in common rarity and increased local endemism, OCBILs should have increased number of old lineages, due to the effects of low dispersability, the James Effect (selection for heterozygosity in small populations) in response to small population sizes should be observed, prolonged speciation at the margins/edges , adaptation to saline soils, nutritional and other biological specialization, as well as special vulnerability such as major soil removal and enhanced resilience (Hopper et al., 2015). This study will be testing the first hypotheses, by investigating the differences in the level of endemism between OCBIL biota and YODFEL biota in the Cape Floristic …show more content…
The stratigraphic units of the peninsula date back to late Proterozoic to Cambrian in the geological time scale, which is known to be around 570-500 Mya (Turner et al., 2011). The outcrops of the pakhuis formation which is the younger formation only represent a smaller portion of the mountain range, and the Graafwater formation which is known as the oldest formation of the cape supergroup outcrops on the front face of Table Mountain and Devils peak (Poulsen, 2013). Graafwater formation consists of sandstones and shales whereas the peninsula formation is dominated by coarse grained quartzitic sandstones (Turner et al.,
Mya Seaway Research Paper
1677 Words | 7 PagesPierre shale is a formation of marine origin from the Cretaceous period that resulted from the Western Interior Seaway. The formation stretches from New Mexico to North Dakota, is up to 700 feet thick and rests on top of the Niobrara formation. The Niobrara Formation is a geological formation that appeared around 87-82 Mya during the Cretaceous, also a result of the Western Interior Seaway. It is composed of two layers: a chalk and limestone layer. The chalk was formed due to calcium carbonate left behind by decomposed shells of microscopic algae that populated the Seaway.
Hell's Half Acre: A Case Study
722 Words | 3 PagesThe rocks do not show signs of heavy weathering. There is some white staining visible, but there is very little red or brown staining. The rocks have abundant vesicles. There is a mix of rocks with varying sizes and numbers of vesicles. Samples collected were representative of this mix.
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Cordell Formation
1484 Words | 6 PagesThe minerals were not obvious in hand sample so further mineralogical analysis would likely be needed to recognize the accessory minerals. The Cordell unit is difficult to distinguish in the field from the lower Engadine unit, the Rockview, due to the high degree of dolomitization and recrystallization. However, unlike the Rockview, the Cordell member is more thinly bedded and fossiliferous and lacks algal mats. The bottom of the Rockview dolostones appear to weather to a lighter color than that of the exposed Cordell and is considered
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Saltville Research Paper
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Barrier Island Case Study
549 Words | 3 PagesIt was conducted in order learn how to better manage the barriers in response to growing development in coastal areas. In response to previous research, it was hypothesized that some barrier islands originally formed offshore and were relocated to their present locations through wash over. The study was conducted by examining stratigraphic sections for nine barrier island transects as well as stratigraphic data from previous studies. Over 200 vibracores were examined for the study total.
Salton Basin Research Paper
1988 Words | 8 PagesThe lower parts have been submerged and desiccated, shown by the layers of travertine, strand formations, and beaches (9). Scientists can infer that the basin was once filled with seawater due to the discovery of fossilized marine shells, corals, and oysters in the rock (9). The fossils are now above tide-level showing a change in elevation of the region (9). Dr. Stephen Bowers, who studies the region, writes, "The water of the old Tertiary Sea, which once prevailed here, must have been extremely favorable to the propagation and growth of mollusks, especially oysters”. There is also evidence of volcanic activity around the area in the form of craters stemming from Pinacate, an extinct volcano (9).
Easter Island Case Study
510 Words | 3 PagesCurrent levels of plant and biodiversity on Easter Island in comparison with the past biodiversity levels, have significantly lowered. Today, Easter Island has a neutral climate, fertile soil, withered lands, and only forty-seven identified species. In contrast, historical Easter Island consisted of tropical forests with different species of trees and different species of animals. 5. Today’s levels of biodiversity on Easter Island can be explained in terms of complexity and disturbance because the Easter Island population unknowingly overexploited their island’s natural resources because they were isolated from other islands.
Manchester State Park Case Study
511 Words | 3 PagesThe poorly sorted nature of the conglomerates, considered with the inclusion of wood fragments in the older conglomerate members and the graded sandstones and mudstones throughout the formation suggest deposition occurred through successions of debris flows. Presence of volcanics in the lithic fragments further indicate volcanic activity in the process of sedimentation as well—as debris flows associated with lahars are the likely source of the slope failures. Deposition environment was moderate to deep marine, as mudstone deposits require low energy depositional environment, but the style of sedimentation indicate deposition was not on a continental shelf. This is further supported by inclusion of the large overturned clast from an older member within the formation. Cross-bedding, graded bedding, and scouring surfaces provide 3 lines of evidence establishing the northern contact of the formation as the original upward oriented surface.
Stumers Reef Research Paper
1686 Words | 7 Pages1.0 Introduction 1.1 Purpose The purpose of this report is to investigate the impacts of urban development on biodiversity at stumers creek dog beach. This report will include data collected from the creek including; water samples, soil samples and animal and excrement surveys in order to determine the health of the environment. 1.2 Location Stumers Creek is located in Coolum Beach, on the Sunshine Coast in Queensland Australia. The sub catchment of Stumers Creek covers an area of 13km2.
Brimbank Park Analysis
1894 Words | 8 PagesSince the location was near to the Maribyrnong River, the procedure must be further stimulated by the existence of the river in the ecosystem, and this is happening from the further upstream. As for the downstream, it carried by the sediment that deposited at the riverbanks of the Maribyrnong River. Weathering and erosion of the primary rock in the early stage were leading to the deposition of sediment, and the younger sediment progressively replaced the older sediment which along the riverbank (Figure 2.3). Further away from the Maribyrnong river a little bit where the river flow was gradually rapid, some Marine deposits from the Ordovician Period was found such as mudstone, interbedded shale and greywacke, which may
Species Diversity And Size Of Area Essay
905 Words | 4 PagesHowever, the rate at which the species were discovered became less and less. This correlates with the Species Area Relationship (SAR) theory as proposed by Arrhenius. When graphed, in both plots we notice a curve. This to correlates within the SAR theory in a small area. As we did not analyze a large area, which encompassed multiple biomes, we did not find the “s” shape graph, which is evident in figure 1 in the literature review.
Bronfenbrenner's Bio-Ecological System Theory Essay
773 Words | 4 PagesIntroduction Bronfenbrenner’s theory looks at a child’s growth in the framework of the structural relations that form his or her environment. It defines complex “layers” of atmosphere, each having an outcome on a child’s expansion. This theory was recently renamed “bio ecological systems theory” to give emphasis to a child’s own biology as a major setting and fuelling their development. The collaboration between factors in the child’s maturing biology, his instant family/community environment, and the social landscape fuels and steers his development. Changes in any layer will wrinkle all the way through other layers.
Advantages And Disadvantages Of Bronfenbrenner's Ecological System Theory
1318 Words | 6 PagesUrie Bronfenbrenner was a Russian born American, he was born on 29 April 1917 and died on 25 September 2005. Urie was a developmental psychologist and was very well known for his ecological systems theory on child’s development. This theory basically states that there are different levels that influence a child’s development. Each level of this system has its own advantages and disadvantages and each level is of the same importance as the other.
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