Assessment of vegetation structure and human impacts in the protected area of Alédjo (Togo)

2012 ◽  
pp. n/a-n/a ◽  
Author(s):  
Kperkouma Wala ◽  
Agbélessessi Y. Woegan ◽  
Wiyao Borozi ◽  
Marra Dourma ◽  
Abalo Atato ◽  
...  
Keyword(s):  
Vegetation Structure ◽  
Protected Area ◽  
Human Impacts

scholarly journals The mismatch between location of protected areas and suitable habitat for the Vulnerable taruka Hippocamelus antisensis

Oryx ◽  
2018 ◽  
Vol 53 (4) ◽  
pp. 752-756 ◽  
Author(s):  
Cristina Mata ◽  
Nicolás Fuentes-Allende ◽  
Juan E. Malo ◽  
André Vielma ◽  
Benito A. González
Keyword(s):  
Protected Areas ◽  
Protected Area ◽  
Species Distribution Model ◽  
Human Impacts ◽  
Atacama Desert ◽  
Distribution Model ◽  
Suitable Habitat ◽  
Core Habitat ◽  
Preferred Habitat ◽  
Educational Programmes

AbstractProtected areas help to decrease human impacts on threatened mammals but do not always include species’ core habitats. Here we focus on the Vulnerable taruka Hippocamelus antisensis near the Atacama Desert, Chile, a population that is mainly threatened by interactions with local human communities. We develop a species distribution model for taruka and assess the contribution of protected areas to safeguarding its preferred habitat. From sightings (collected during 2004–2015), absence records (collected in 2014), and environmental variables, we determined that taruka habitat is scarce, highly fragmented and limited to humid areas. Only 7.7–11.2% of the taruka's core habitat is under protection. We recommend the establishment of a protected area in the south of Arica-Parinacota district, an area without settlements that lies within the taruka's core habitat, along with educational programmes, fencing of crops, and inclusion of communities in decision-making in areas where farmer–taruka interactions are negative.

scholarly journals Antarctica's wilderness has declined to the exclusion of biodiversity

2019 ◽  
Author(s):  
Rachel I. Leihy ◽  
Bernard W.T. Coetzee ◽  
Fraser Morgan ◽  
Ben Raymond ◽  
Justine D. Shaw ◽  
...  
Keyword(s):  
Surface Area ◽  
Human Activity ◽  
Protected Area ◽  
Human Impacts ◽  
Area Network ◽  
Natural Reserve ◽  
Wilderness Areas ◽  
Biogeographic Regions ◽  
The Antarctic ◽  
Specially Protected Areas

Recent assessments of the biodiversity value of Earth's dwindling wilderness areas have emphasized the whole of Antarctica as a crucial wilderness in need of urgent protection. Whole-of-continent designations for Antarctic conservation remain controversial, however, because of widespread human impacts and frequently used provisions in Antarctic law for the designation of specially protected areas to conserve wilderness values, species and ecosystems. Here we investigate the extent to which Antarctica's wilderness encompasses its biodiversity. We assembled a comprehensive record of human activity on the continent (~ 2.7 million localities) and used it to identify unvisited areas ≥ 10 000 km2 (i.e. Antarctica's wilderness areas) and their representation of biodiversity. We show that, at best, 7 770 000 km2 of wilderness remains, covering 56.9% of the continent's surface area, however it captures few important biodiversity features. Important Bird Areas, ice-free Antarctic Conservation Biogeographic Regions crucial for biodiversity and areas with verified biodiversity records are largely excluded. Our results demonstrate that Antarcticas wilderness has already declined to the exclusion of much of its biodiversity. But that on a continent set aside as a natural reserve, increased regulation of human activity and urgent expansion of the Antarctic specially protected area network could feasibly reverse this trend.

scholarly journals Dynamics of vegetation structure and composition within early regeneration forest in the Danau Bangko Protected Area, Jambi, Indonesia

2021 ◽  
Vol 2 (1) ◽  
pp. 52-61
Author(s):  
Asep Sadili ◽  
Dolly Priatna ◽  
Sutanto Sutanto
Keyword(s):  
Vegetation Structure ◽  
Protected Area ◽  
Dominant Species ◽  
Permanent Plot ◽  
Growth Phases ◽  
Plantation Forest ◽  
Plot Structure ◽  
Early Regeneration ◽  
Tree Sapling ◽  
Dynamics Of Vegetation

 An analysis of the growth dynamics of a 1-ha  (100 m x 100 m) permanent plot was carried out in the Danau Bangko Protected Area (DBPA) in March 2020. DBPA is part of the industrial plantation forest concession of PT Rimba Hutani Mas (PT RHM) in Jambi Province. The study aims to determine the dynamics of vegetation structure and composition between 2018 and 2020 in early regeneration forest. All trees tagged in 2018 were remeasured in 2020. Trees that had not been tagged previously but were 10 cm in diameter at breast height (DBH) were identified as a new recruit and tagged with a new number. Observations and data analysis were carried out on three stages of growth phases, namely in the tree phase ( 10 cm DBH), sapling phase (10 cm DBH), and seedling phase (height 1.5 m). The results showed that the number of species, genera, and families within the tree and sapling phases were high, but were low in the seedling phase. The dominant species in the tree phase in 2018,  Alseodaphne bancana,  had been  replaced by Archidendron bubalinum  in 2020, whereas the dominant species in the sapling phase (Rothmania sp.) and seedling phase (Aporusa microsphaera) remained the same from  2018  to 2020 . Mortality rates in all growth phases (tree, sapling and seedling) together is 4.67%. Recruitment into the tree phase from 2018 to 2020 was 2.67%,  consisting of eight species, eight genera, and seven families. Within one hectare permanent plot, all members of each tree species were distributed randomly. The vertical structure of the forest area is dominated by stratum C (4-20 m height). The results of hypothesis testing for each phase (tree, sapling, seedling) were different, however overall the results showed that the plot structure and composition had changed. Studi dinamika hutan dilakukan di Kawasan Lindung Danau Bangko (KLDB) pada Maret 2020 dengan menggunakan pendekatan plot permanen seluas satu hektar (100 m x 100 m). KLDB merupakan bagian dari konsesi hutan tanaman industri PT Rimba Hutani Mas (PT RHM) di Provinsi Jambi. Penelitian ini bertujuan untuk mengetahui dinamika struktur dan komposisi vegetasi antara pengukuran tahun 2018 dan 2020, khususnya pada areal dengan tutupan Belukar Tua (BT). Diameter semua pohon yang telah diberi tanda nomor pada tahun 2018 diukur kembali. Pohon yang belum diberi tanda sebelumnya tetapi diameternya 10 cm setinggi dada (DBH) ditetapkan sebagai rekrutmen baru dan diberi tanda dengan nomor baru. Pengamatan dan analisis data dilakukan terhadap tiga tahap tahap pertumbuhan, yaitu tingkat pohon (10 cm DBH), tingkat pancang (10 cm DBH), dan tingkat semai (tinggi 1,5 m). Hasil penelitian menunjukkan bahwa jumlah spesies, jumlah marga, dan jumlah famili pada tingkat pohon dan pancang tinggi, sedangkan pada tingkat semai rendah. Jenis dominan pada tingkat pohon pada tahun 2018 adalah Alseodaphne bancana telah digantikan oleh Archidendron bubalinum pada tahun 2020, sedangkan pada tingkat pancang (Rothmania sp) dan tingkat semai (Aporusa microsphaera) merupakan jenis yang dominan baik pada tahun 2018 maupun pada tahun 2020. Angka kematian pada semua tahapan pertumbuhan bervariasi dengan rata-rata 4,67%. Rekrutmen di tingkat pohon 2,67% yang terdiri dari 8 spesies, 8 marga, dan 7 famili. Secara keseluruhan, semua spesies tersebar secara acak. Tinggi tajuk pohon didominasi oleh stratum C (tinggi 4 m - 20 m). Hasil pengujian hipotesis pada setiap tingkatan (pohon, pancang, semai) berbeda, namun hasil penggabungan semua data menunjukkan bahwa telah terjadi dinamika.

scholarly journals Global areas of low human impact (‘Low Impact Areas’) and fragmentation of the natural world

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Andrew P. Jacobson ◽  
Jason Riggio ◽  
Alexander M. Tait ◽  
Jonathan E. M. Baillie
Keyword(s):  
Habitat Fragmentation ◽  
Human Impact ◽  
Habitat Loss ◽  
Protected Area ◽  
Human Impacts ◽  
Natural World ◽  
Primary Response ◽  
Natural State ◽  
Data Sets ◽  
Critical Question

Abstract Habitat loss and fragmentation due to human activities is the leading cause of the loss of biodiversity and ecosystem services. Protected areas are the primary response to this challenge and are the cornerstone of biodiversity conservation efforts. Roughly 15% of land is currently protected although there is momentum to dramatically raise protected area targets towards 50%. But, how much land remains in a natural state? We answer this critical question by using open-access, frequently updated data sets on terrestrial human impacts to create a new categorical map of global human influence (‘Low Impact Areas’) at a 1 km2 resolution. We found that 56% of the terrestrial surface, minus permanent ice and snow, currently has low human impact. This suggests that increased protected area targets could be met in areas minimally impacted by people, although there is substantial variation across ecoregions and biomes. While habitat loss is well documented, habitat fragmentation and differences in fragmentation rates between biomes has received little attention. Low Impact Areas uniquely enabled us to calculate global fragmentation rates across biomes, and we compared these to an idealized globe with no human-caused fragmentation. The land in Low Impact Areas is heavily fragmented, compromised by reduced patch size and core area, and exposed to edge effects. Tropical dry forests and temperate grasslands are the world’s most impacted biomes. We demonstrate that when habitat fragmentation is considered in addition to habitat loss, the world’s species, ecosystems and associated services are in worse condition than previously reported.

Human impacts on residency behaviour of spangled emperor, Lethrinus nebulosus, in a marine protected area, as determined by acoustic telemetry

2008 ◽  
Vol 88 (4) ◽  
pp. 825-829 ◽  
Author(s):  
Olivier Chateau ◽  
Laurent Wantiez
Keyword(s):  
Protected Area ◽  
Acoustic Telemetry ◽  
Marine Protected Area ◽  
New Caledonia ◽  
Human Impacts ◽  
Feeding Activity ◽  
Marine Communities ◽  
Diurnal Patterns ◽  
Feeding Activities ◽  
Lethrinus Nebulosus

The residency behaviour of six specimens of spangled emperor, Lethrinus nebulosus, was studied by acoustic telemetry in the mooring area (3–6 m depth) of a marine protected area (MPA) in New Caledonia. The 3 smaller fish (34–49 cm FL) remained within the study site less than 6 hours. The 3 larger individuals (51–54 cm FL) were regularly detected within the study site during the survey (6.5 months). These fish followed similar diurnal patterns of detection. They use the study site as a resting area during the day and migrate each night to feeding grounds after sunset. However, their presence was higher when wind speed was low (<10 knots) during weekends and school holidays. These links reflect a possible impact of human feeding activity. Consequently, management policies should include measures to control feeding activities within MPAs to maintain marine communities in a state unaltered by human activities.

scholarly journals Vegetation Structure and Composition across Different Land Uses in a Semiarid Savanna of Southern Zimbabwe

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Patience Zisadza-Gandiwa ◽  
Cheryl T. Mabika ◽  
Olga L. Kupika ◽  
Edson Gandiwa ◽  
Chrispen Murungweni
Keyword(s):  
Land Use ◽  
Protected Areas ◽  
Vegetation Structure ◽  
Protected Area ◽  
Sampling Technique ◽  
Grass Species ◽  
Land Uses ◽  
Community Based ◽  
Communal Area ◽  
Compositional Diversity

We compared the structure and composition of vegetation communities across different land uses in the northern Gonarezhou National Park and adjacent areas, southeast Zimbabwe. Vegetation data were collected from 60 sample plots using a stratified random sampling technique from April to May 2012. Stratification was by land use, and sample plots in all three strata occurred on predominantly siallitic soils. Our results show that the communal area had higher woody plant species diversity (H'=2.66) than the protected area (H'=1.78). However, the protected area had higher grass species richness per plot than the communal area and resettlement area. Overall, the protected area had more structural and compositional diversity than the other land use areas. These findings suggest that the areas adjacent to protected areas contribute to plant diversity in the greater ecosystem; hence conservation efforts should extend beyond the boundaries of protected areas. We recommend that protected area management should engage community-based institutions in neighbouring areas for effective monitoring of woody vegetation structure and composition.

scholarly journals Anticipating the spatio-temporal response of plant diversity and vegetation structure to climate and land use change in a protected area

Ecography ◽  
2014 ◽  
Vol 37 (12) ◽  
pp. 1230-1239 ◽  
Author(s):  
Isabelle Boulangeat ◽  
Damien Georges ◽  
Cédric Dentant ◽  
Richard Bonet ◽  
Jérémie Van Es ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Plant Diversity ◽  
Vegetation Structure ◽  
Protected Area ◽  
Temporal Response ◽  
Spatio Temporal

scholarly journals Cross-boundary human impacts compromise the Serengeti-Mara ecosystem

Science ◽  
2019 ◽  
Vol 363 (6434) ◽  
pp. 1424-1428 ◽  
Author(s):  
Michiel P. Veldhuis ◽  
Mark E. Ritchie ◽  
Joseph O. Ogutu ◽  
Thomas A. Morrison ◽  
Colin M. Beale ◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Protected Areas ◽  
Natural Resource Management ◽  
Natural Resource ◽  
Protected Area ◽  
Human Impacts ◽  
Landscape Degradation ◽  
The Core ◽  
Lines Of Evidence ◽  
Ecological Functioning

Protected areas provide major benefits for humans in the form of ecosystem services, but landscape degradation by human activity at their edges may compromise their ecological functioning. Using multiple lines of evidence from 40 years of research in the Serengeti-Mara ecosystem, we find that such edge degradation has effectively “squeezed” wildlife into the core protected area and has altered the ecosystem’s dynamics even within this 40,000-square-kilometer ecosystem. This spatial cascade reduced resilience in the core and was mediated by the movement of grazers, which reduced grass fuel and fires, weakened the capacity of soils to sequester nutrients and carbon, and decreased the responsiveness of primary production to rainfall. Similar effects in other protected ecosystems worldwide may require rethinking of natural resource management outside protected areas.

Sign in / Sign up

Export Citation Format

Share Document