Effects of soil and wood depletion on biodiversity

Harvey, Célia A.; Pimentel, David

doi:10.1007/bf00052721

Cited by 12 publications

(6 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Timber extraction is the principal anthropogenic impact and the main cause of species extinction in terrestrial forest ecosystems (Harvey & Pimentel 1996), and even selective logging has been questioned for its negative effects on both animal and plant diversity (Fredericksen & Fredericksen 2002, Vaglio Laurin et al 2016. African tropical forests have been exploited and severely disturbed by anthropogenic activities for many centuries (Valentini et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Tree species diversity of three Ghanaian reserves

Gatti¹,

Laurin²,

Valentini³

2017

iForest

View full text Add to dashboard Cite

(2-3)Among tropical areas, Africa is considered to be poor in terms of biodiversity as compared with Amazon or South-East Asia, especially with respect to forest diversity. Despite this lower diversity, some African tropical zones, such as Ghana, harbour a plethora of species, particularly of trees. Unfortunately, as a result of anthropogenic impacts, biological diversity in West Africa dramatically decreased in the last decades, with very limited reference to evaluate the amount of the loss. Due to these growing pressure, a collection of relevant biodiversity information in this region seems to be urgent. We surveyed 127 temporary plots randomly distributed within 3 protected areas in Ghana and we collected data on tree (dbh>10 cm) species richness and their abundances. We also performed α, and β diversity analyses, and estimated the effective number of species, adopting various indices and approaches to provide further information on each assemblage. The main goals of this research were: (i) to provide a wide tree species database (abundance-based data), together with some biodiversity analyses; (ii) to estimate the sampling effort needed for next biodiversity surveys in the same and similar regions; and (iii) to calculate some indices useful to monitor the future of these protected areas both in terms of conservation and biodiversity research.

show abstract

Section: Introductionmentioning

confidence: 99%

Tree species diversity of three Ghanaian reserves

Gatti¹,

Laurin²,

Valentini³

2017

iForest

View full text Add to dashboard Cite

show abstract

“…Multiple and varied effects of high sediment loads on aquatic ecosystems have been documented (see reviews by Cordone & Kelley, 1961;Chutter, 1969;Bruton, 1985;Clarke et al, 1985;Lloyd, 1985;Appleby & Scarratt, 1989;Newcombe & MacDonald, 1991;Ryan, 1991;Kerr, 1995;Harvey & Pimentel, 1996;Wood & Armitage, 1997). In spite of this, little work has focussed on lakes and less still is known of the overall impacts of increased sediment loads on lake ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Impacts of increased sediment loads on the ecology of lakes

2009

View full text Add to dashboard Cite

Increased sediment loading comprises one of the most important and pervasive anthropogenic impacts on aquatic ecosystems globally. In spite of this, little is known of the overall effects of increased sediment loads on lakes. By modifying both bottom-up and top-down ecological processes and restructuring energy flow pathways, increased sediment loads not only alter biotic assemblage structure and ecological functioning significantly, but frequently result in reduced biological diversity and productivity. Although lake food-webs can be subsidised to some extent by the adsorption of organic carbon to fine sediments, trophic structure and the composition of biotic assemblages remain likely to be modified considerably. The mineralogy and particle size of sediments and the availability of nutrients, by influencing both the scale and nature of impacts, are key determinants of the overall effects of increased sediment loads on lake ecosystems. Although interactions with other global anthropogenic pressures, such as invasion by exotic species and climate change, are likely to be significant, little remains known about the nature or likely strength of those interactions. Widespread increases in sediment loading to lakes have, therefore, profound implications for the conservation and management of global aquatic biological diversity.

show abstract

“…The removal of stumps, snags, and other woody debris associated with stumping, road construction, pest control, and other traditional forestry operations has the potential of negatively impacting biodiversity. Researchers increasingly are recognizing and documenting the biological importance of coarse woody debris in southern forest ecosystem structure and function (McMinn and Crossley 1993;Harvey and Pimentel 1996), both terrestrial and aquatic (Wallace, Grubaugh, and Whiles 1993), in addition to negative consequences associated with woody debris loss (Harvey and Pimentel 1996). Specifically, McMinn and Crossley (1993) provide selected papers asserting the role of coarse woody debris in maintaining regional biological diversity in addition to specific consideration of its importance in seedling recruitment and maintenance of healthy and diverse fish, invertebrate, bird, mammal, herpetofauna, and soil mite communities.…”

Section: Agricultural and Forestry Practicesmentioning

confidence: 99%

Management of Longleaf Pine Woodlands for Threatened and Endangered Species

Harper¹,

Trame²,

Fischer³

et al. 1997

View full text Add to dashboard Cite

Longleaf pine woodlands on military installations support multiple uses, including the Department of Defense (DoD) training and testing mission; threatened, endangered, and sensitive species (TES) conservation; and forest commodities (e.g., timber, pine straw) production. This report documents strategies to manage TES and their habitats on a plant community basis, using methods that apply to multiple species, and using methods that apply across the southeastern region of the United States. This report combines the pine flatwoods and sandhills communities because they have several features that link them. Ecological descriptions are provided for each community, along with available information about community occurrences on DoD installations throughout the southeast region. Known occurrences of plant and animal TES associated with longleaf pine woodlands on DoD lands are also reported. Known and potential impacts to the integrity of longleaf pine woodlands as TES habitat, and to associated species are reported. Impacts may be related to habitat fragmentation, or changes in community composition, structure and function due to altered fire regime, hydrologic patterns, soil stability and structure, groundcover integrity, or the invasion of exotic or pest species. Management recommendations are made within an ecosystembased, adaptive management context.

show abstract

Effects of soil and wood depletion on biodiversity

Cited by 12 publications

References 45 publications

Tree species diversity of three Ghanaian reserves

Tree species diversity of three Ghanaian reserves

Impacts of increased sediment loads on the ecology of lakes

Management of Longleaf Pine Woodlands for Threatened and Endangered Species

Contact Info

Product

Resources

About