Population structure of montane bamboo and causes of its decline in Echuya Central Forest Reserve, South West Uganda

2008 ◽  
Vol 46 (3) ◽  
pp. 325-332 ◽  
Author(s):  
Robert Bitariho ◽  
Alastair McNeilage
Keyword(s):  
Population Structure ◽  
Forest Reserve ◽  
South West

Pattern in a derived savanna in Nigeria

1991 ◽  
Vol 7 (4) ◽  
pp. 491-502 ◽  
Author(s):  
P. Greig-Smith
Keyword(s):  
Analysis Of Variance ◽  
Block Size ◽  
Basal Area ◽  
Species Density ◽  
Forest Reserve ◽  
South West ◽  
Derived Savanna ◽  
Woody Growth

ABSTRACTAll woody growth was enumerated in three transects, each 960 m x 20 m, in derived savanna in the Olokemeji Forest Reserve in south-west Nigeria. The data for species density, species basal area and stem girth classes were analysed by nested-block analysis of variance and covariance. The use of ‘total covariance’, the sum of all covariances at a block size, contributes to understanding of the pattern present.Three scales of pattern were evident. Patchiness at 160–320 m is interpreted as a response to soil differences or to the pattern of previous farming, which may itself have been determined by soil differences. Patchiness at 20–40 m is attributable to varying intensity of burning. At the smallest scale, of 10 m, there is evidence of regularity of distribution resulting from interference between individuals, possibly due to competition for water.

scholarly journals Population structure of the oviparous South-West European common lizard

2019 ◽  
Vol 65 (1) ◽  
Author(s):  
Jose Luis Horreo ◽  
María Luisa Peláez ◽  
Merel C. Breedveld ◽  
Teresa Suárez ◽  
María Urieta ◽  
...  
Keyword(s):  
Population Structure ◽  
South West ◽  
Common Lizard ◽  
West European

scholarly journals Population structure of five native sheep breeds of Sweden estimated with high density SNP genotypes

BMC Genetics ◽  
2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Christina Marie Rochus ◽  
Elisabeth Jonas ◽  
Anna M. Johansson
Keyword(s):  
Population Structure ◽  
Snp Array ◽  
Principal Component ◽  
Northern Sweden ◽  
The Baltic Sea ◽  
Sheep Breeds ◽  
The North ◽  
South West ◽  
Branch Lengths ◽  
The Baltic

Abstract Background Native Swedish sheep breeds are part of the North European short-tailed sheep group; characterized in part by their genetic uniqueness. Our objective was to study the population structure of native Swedish sheep. Five breeds were genotyped using the 600 K SNP array. Dalapäls and Klövsjö sheep are from the middle of Sweden; Gotland and Gute sheep from Gotland, an island in the Baltic Sea; and Fjällnäs sheep from northern Sweden. We studied population structure by: principal component analysis (PCA), cluster-based analysis of admixture, and an estimated population tree. Results The analyses of the five Swedish breeds revealed that these breeds are five distinct breeds, while Gute and Gotland are more closely related to each other as seen in all analyses. All breeds had long branch lengths in the population tree indicating they’ve been subjected to drift. We repeated our analyses using 39 K SNP and including 50 K SNP genotypes from other European and southwestern Asian breeds from the Sheep HapMap project and 600 K SNP genotypes from a dataset of French sheep. Results arranged breeds into five groups: south-west Asia, south-west Europe, central Europe, north Europe and north European short-tailed sheep. Within this last group, Norwegian and Icelandic breeds, Finn and Romanov sheep, Scottish breeds, and Gute and Gotland sheep were more closely related while the remaining Swedish breeds and Ouessant sheep were distinct from all breeds and had longer branches in the population tree. Conclusions We showed population structure of five Swedish breeds and their structure within European and southwestern Asian breeds. Swedish breeds are unique, distinct breeds that have been subjected to drift but group with other north European short-tailed sheep.

scholarly journals Population Structure and Oxacillin Resistance ofStaphylococcus aureusfrom Pigs and Pork Meat in South-West of Poland

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Paweł Krupa ◽  
Jarosław Bystroń ◽  
Magdalena Podkowik ◽  
Joanna Empel ◽  
Aneta Mroczkowska ◽  
...  
Keyword(s):  
Population Structure ◽  
Pork Meat ◽  
First Report ◽  
Oxacillin Resistance ◽  
South West ◽  
First Time

The genotypes and oxacillin resistance of 420S. aureusisolates from pigs (n=203) and pork (n=217) were analyzed. Among 18spatypes detected inS. aureusfrom pig t011, t021, t034, t091, t318, t337, and t1334 were the most frequent. Among 30spatypes found inS. aureusisolates from pork t084, t091, t499, t4309, t12954, and t13074 were dominant. The animalS. aureusisolates were clustered into MLST clonal complexes CC7, CC9, CC15, CC30, and CC398 and meat-derived isolates to CC1, CC7, and CC15. Thirty-six MRSA were isolated exclusively from pigs. All MRSA were classified tospat011 SCCmecV. BORSA phenotype was found in 14%S. aureusisolates from pigs and 10% isolates from pork meat.spat034 dominated among BORSA from pigs and t091 among meat-derived BORSA. This is the first report onspatypes and oxacillin resistance ofS. aureusstrains from pigs and pork meat in Poland. BesidesS. aureusCC9, CC30, and CC398 known to be distributed in pigs, the occurrence of genotype belonging to CC7 in this species has been reported for the first time. To our knowledge it is also the first report concerning CC398 BORSA isolates from pigs and pork meat.

scholarly journals Geo-spatial Assessment of Land Use/Land Cover (LU/LC) Dynamics in Akoko South West Local Government, Ondo State, Nigeria

2021 ◽  
pp. 46-54
Author(s):  
Dada Ibilewa ◽  
Mustapha Aliyu ◽  
Usman O. Alalu ◽  
Taiwo Hassan Abdulrasheed
Keyword(s):  
Land Use ◽  
Local Government ◽  
Land Cover ◽  
Landsat Images ◽  
Rock Outcrops ◽  
Forest Reserve ◽  
Spatial Assessment ◽  
South West ◽  
Moderate Change ◽  
Microsoft Office

Geo-spatial assessment of land use/cover dynamics in Akoko South West Local Government was instigated to bridge the knowledge gap created by data deficiency on the nature, scope and magnitude of land use/cover change in the area. This was done through the analysis of Landsat images of three epochs from 2000 through 2010 to 2020. The processing of the satellite images was done in ArcGIS 10.8 while the analysis and 2030 projection was done in Microsoft office excel using the result from the analysis. QGIS was used to remove the scan lines error on the 2010 image. The result showed increasing built-up area, reducing vegetation and farmlands and diminishing rock outcrops. The changes vary among the different classification characteristics. The increasing change in the second epoch was higher in built up areas while rock outcrops increased in the first epoch. Farmland and vegetation were on reducing trend throughout the study period. However, the moderate change observed in the second epoch for the two land cover classes were not as significant as the first epoch. Government policies on forest reserve should strictly be adhered to in order to preserve the vegetation in the area. People of the area should be advised to diversify their economy in order to avoid total dependence on the forest reserve.

scholarly journals Non-Timber Forest Products and Climate Change Adaptation / Forest Dependent Communities In Bamboko Forest Reserve, South West Region Of Cameroon

2020 ◽  
Author(s):  
Tieminie Robinson Nghogekeh ◽  
Chia Eugene Loh ◽  
Tieguhong Julius Chupezi ◽  
Nghobuoche Frankline Mayiadieh ◽  
Piabuo Serge Mandiefe ◽  
...  
Keyword(s):  
Climate Change ◽  
Forest Products ◽  
Safety Net ◽  
Crop Failure ◽  
Forest Reserve ◽  
West Region ◽  
South West ◽  
Non Timber Forest Products ◽  
Current Change ◽  
South West Region

Abstract Background: This study to assess the role of Non-timber forest products was conducted to forest dependent communities around Bamkoko Forest Reserve in the South West Region of Cameroon as a strategy to cope with the impacts of climate change. Methods: Data were collected through household questionnaires, participatory rural appraisal techniques, transect walk and direct field observations. Results: A total of 16 plants species were identified to be harvested by residents around Bamkoko Forest Reserve as None Timber Forest Products. The majority of the respondents (88%) perceived that there has been a change in the climate patterns due to increased temperatures and unpredictable rainfalls. Eru was found to be the most affected livelihood activity (55%) by climate change around Bamboko Forest Reserve. Communities living around Bamboko Forest Reserve were found to use more than one strategy to cope with the adverse effects of climate change. Conclusion: The study concluded that NTFPs still play a safety net role to assist communities in adverse situation such as crop failure under the current change in climate. The need to emphasis sustainable harvesting, improve processing and access to NTFPs markets is crucial.

scholarly journals Population structure and biology of shortfin mako, Isurus oxyrinchus, in the south-west Indian Ocean

2014 ◽  
Vol 65 (12) ◽  
pp. 1045 ◽  
Author(s):  
J. C. Groeneveld ◽  
G. Cliff ◽  
S. F. J. Dudley ◽  
A. J. Foulis ◽  
J. Santos ◽  
...  
Keyword(s):  
Population Structure ◽  
Indian Ocean ◽  
Fork Length ◽  
West Indian ◽  
Age And Growth ◽  
The South ◽  
South West Indian Ocean ◽  
South West ◽  
Shortfin Mako ◽  
West Indian Ocean

The population structure, reproductive biology, age and growth, and diet of shortfin makos caught by pelagic longliners (2005–10) and bather protection nets (1978–2010) in the south-west Indian Ocean were investigated. The mean fork length (FL) of makos measured by observers on longliners targeting tuna, swordfish and sharks was similar, and decreased from east to west, with the smallest individuals occurring near the Agulhas Bank edge, June to November. Nearly all makos caught by longliners were immature, with equal sex ratio. Makos caught by bather protection nets were significantly larger, males were more frequent, and 93% of males and 55% of females were mature. Age was assessed from band counts of sectioned vertebrae, and a von Bertalanffy growth model fitted to sex-pooled length-at-age data predicted a birth size (L0) of 90 cm, maximum FL (L∞) of 285 cm and growth coefficient (k) of 0.113 y–1. Males matured at 190 cm FL, aged 7 years, and females at 250 cm, aged 15 years. Litter sizes ranged from nine to 14 pups, and the presence of gravid females in bather protection nets suggested that some pupping occurred in shelf waters. Teleosts (mainly Trachurus capensis) occurred in 84% of stomachs collected on longliners, whereas elasmobranchs (63.5%) were most common in samples collected from bather protection nets, followed by teleosts (43.1%) and cephalopods (36.5%). Larger prey size may be a factor that attracts large makos to coastal waters.

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