scholarly journals Autecology of Drosera burmanni in the Wolobobo Botanic Gardens, Ngada District, Flores Island, Indonesia

2020 ◽  
Vol 21 (5) ◽  
Author(s):  
Joko Ridho Witono ◽  
DIDI USMADI ◽  
WIHERMANTO ◽  
DANANG WAHYU PURNOMO ◽  
DINA SAFARINANUGRAHA ◽  
...  
Keyword(s):  
Population Distribution ◽  
Natural Habitat ◽  
In Situ Conservation ◽  
Imperata Cylindrica ◽  
Annual Rainfall ◽  
Limited Area ◽  
Botanic Gardens ◽  
Island Conservation ◽  
Conservation Area ◽  
Associated Species

Abstract. Witono JR, Usmadi D, Wihermanto, Purnomo DW, Safarinanugraha D, Pakiding Y, Netoseso N. 2020. Autecology of Drosera burmanni in the Wolobobo Botanic Gardens, Ngada District, Flores Island, Indonesia. Biodiversitas 21: 2137-2145. Drosera burmanni Vahl is a native carnivorous plant from tropical and subtropical Asia to the West Pacific, including Flores Island. During the botanical survey, a small population of the species was found in a limited area in the Wolobobo Botanic Gardens, Flores Island. Conservation of the species is necessary, since the habitat might be developed for the botanic gardens infrastructure. This research aims to study the autecology of D. burmanni, including environmental preferences and its associated species. Thirty plots with 2 x 2 m each were made to recognize its associated species and the pattern of its population distribution and its soil requirements. In the Wolobobo Botanic Gardens, D. burmanni flourishes with an average annual rainfall of 1835 mm; a temperature of 12.50-26.2° C; 48-99% humidity; at an altitude of 1489-1491 m asl.; a soil pH of 6.66, which contains very high C-organic, a high C/N ratio, moderate N total, K2O, P2O5, low CEC, and very low K, Na, Ca, Mg, and BS. Drosera burmanni displays a density of 8.5 individuals per m2 and is associated with 20 species, which belong to 19 genera and 9 families. The species has a clustering pattern and a positive association with Erigeron sumatrensis, Spinifex littoreus, and Imperata cylindrica. To conserve D. burmanni in the Wolobobo Botanic Gardens, it is necessary to designate its natural habitat as an in situ conservation area.

scholarly journals In situ conservation of fruit landraces

2010 ◽  
Vol 46 (Special Issue) ◽  
pp. S57-S59 ◽  
Author(s):  
F. Paprštein ◽  
J. Sedlák ◽  
V. Holubec
Keyword(s):  
Global Positioning System ◽  
Natural Habitat ◽  
In Situ Conservation ◽  
Sour Cherry ◽  
Ex Situ ◽  
The Czech Republic ◽  
Fruit Species ◽  
Global Positioning ◽  
Berry Fruits

<I>In situ </I>conservation is considered as conservation of wild biota in the natural habitat (locality). The authors extend the term to cultivated fruit species naturalised in the landscape, such as occasional spontaneous seedlings, and planted material such as old solitary trees among fields, old groves, avenues (country lanes), wind-breaks, and abandoned remnants of orchards. <I>In situ </I>conservation is also used to mark unique materials during collecting expeditions, before they will be taken as <I>ex situ </I>or proclaimed as permanent <I>in situ</I>. Important landraces found within 12 regions of the Czech Republic were registered, evaluated, and <I>in situ </I>localised by Global Positioning System (GPS). The following accessions were marked for in-situ conservation: apple (401), sweet cherry (263), pear (91), plum (42), sour cherry (27), and berry fruits (18).

scholarly journals Conservation of threatened plant species in botanic garden reserves in Brazil

Oryx ◽  
2016 ◽  
Vol 52 (1) ◽  
pp. 108-115 ◽  
Author(s):  
Maria Lúcia M. N. da Costa ◽  
Peter Wyse Jackson ◽  
Ricardo Avancini Fernandes ◽  
Ariane Luna Peixoto
Keyword(s):  
Plant Species ◽  
Threatened Species ◽  
In Situ Conservation ◽  
Integrated Approach ◽  
Ex Situ ◽  
Conservation Strategies ◽  
Botanic Gardens ◽  
Threatened Plant Species ◽  
Integrated Conservation ◽  
Scientific Value

AbstractOver the last few decades botanic gardens worldwide have been encouraged to adopt complementary measures for the conservation of plant species from their own regions, combining in situ conservation efforts with ex situ methods, both in cultivation and in storage. This integrated approach is particularly important for botanic gardens in the tropics, which face the challenge of conserving a highly diverse and often threatened flora. We gathered information on the occurrence of threatened species in the natural vegetation reserves of 21 Brazilian botanic gardens. The data were collected from herbarium records in the database of the National Centre for Flora Conservation, and from the available plant inventories of these reserves. The results indicate that 148 species from the List of Threatened Species of Brazilian Flora are recorded as having been collected in the reserves. Of these, 51 species were maintained in the living collections of 18 botanic gardens and 83 species were recorded in federally protected areas. The occurrence of threatened species in the reserves of botanic gardens highlights the scientific value of these areas, as well as their biological, social and cultural importance for conservation. The results may be used to inform the planning of integrated conservation strategies for threatened species.

Variation in seed longevity among different populations, species and genera found in collections from wild Australian plants

2009 ◽  
Vol 57 (2) ◽  
pp. 123 ◽  
Author(s):  
Jitka Kochanek ◽  
Kathryn J. Steadman ◽  
Robin J. Probert ◽  
Steve W. Adkins
Keyword(s):  
Survival Data ◽  
Natural Variation ◽  
Population Distribution ◽  
Population Viability ◽  
Seed Longevity ◽  
Annual Rainfall ◽  
Initial Population ◽  
Seed Collection ◽  
Different Populations ◽  
Collection Strategies

Natural variation in longevity among populations of the same species, and between species and genera was investigated to inform seed-collection strategies. Seed longevity for 30 wild Australian populations was measured with a controlled ageing test. The populations were represented by eight species from three genera, namely Minuria (Asteraceae), Wahlenbergia (Campanulaceae) and Plantago (Plantaginaceae), each collected from up to eight different locations. Seed-survival curves were fitted by using the equation v = Ki + p/σ, which allowed comparison of the initial population viability (Ki), the population distribution of seed life spans (σ), and mean seed longevity (P50, calculated as Ki × σ). At a genus level, the average P50 indicated that M. integerrima (DC) Benth. is the longest-lived, Wahlenbergia is intermediate and Plantago is the shortest-lived. However, there was also variation in P50 values among populations of most species. Some species had the same σ value for all populations, e.g. all eight populations of W. communis Carolin had the same σ value, with the differences in Ki causing the variation in P50. This consistency in σ existed even though seedlots were collected from diverse locations, with mean annual rainfall ranging from 180 to 840 mm. In comparison, for the six seedlots of W. gracilis (G.Forst.) A.DC., a large difference in σ as well as Ki led to the variability in P50, with some indication of a possible correlation between annual rainfall and P50 or σ in some species. A relationship between variation in σ and the breeding system is proposed for Wahlenbergia. The data show that it can be risky to expect accurate prediction of seed longevity for a wild species on the basis of survival data from a single collection.

A PIT tag based analysis of annual movement patterns of adult fire salamanders (Salamandra salamandra) in a Middle European habitat

2007 ◽  
Vol 28 (4) ◽  
pp. 531-536 ◽  
Author(s):  
Ulrich Schulte ◽  
Daniel Küsters ◽  
Sebastian Steinfartz
Keyword(s):  
Site Fidelity ◽  
Negative Impact ◽  
Natural Habitat ◽  
Home Range Size ◽  
Activity Period ◽  
Limited Area ◽  
Home Ranges ◽  
Minimum Convex Polygon ◽  
Pit Tags ◽  
Salamandra Salamandra

Abstract We studied patterns of annual movement of individual adult fire salamanders (Salamandra salamandra) during the years 2001 and 2002 in Western Germany in a typical middle European habitat for this species. We tested whether salamanders inhabit small home ranges and move little during the activity period as predicted for a species that shows strong site fidelity to a limited area. Initially, 98 individuals were collected in their natural habitat and marked with passive integrated transponder (PIT) tags. Of those individuals 88 were released at the collection site for recapture during the activity periods of the years 2001 and 2002. Ten marked individuals were kept in captivity to test for the tolerance of PIT tags. We did not find any negative impact of PIT tags on marked individuals of S. salamandra, neither under captive nor natural conditions. Forty-seven of the marked individuals (corresponding to 53% of the 88 released ones) were recaptured at least once and 28 individuals (corresponding to 32%) were recaptured multiple times. The return rate of males (78%) was higher than for females (43%). Mean home range size (and standard deviation) was estimated to 494 ± 282 m2 for 4 individuals as the minimum convex polygon based on 5 to 6 recapture events for each individual per year and to 1295 ± 853 m2 for 3 individuals with 8 records over two years. Minimum distances moved inferred from individual recaptures increased during the activity period of both years with time, indicating that individuals have more of a tendency to disperse than to stay within a limited area. Our data suggest therefore that S. salamandra adults display site fidelity, but use a much larger area than hitherto documented for this and other terrestrial salamander species.

scholarly journals Non-Inverse J - shaped population distribution: Peculiarity of Red Sanders forests

2018 ◽  
Vol 10 (2) ◽  
pp. 11356
Author(s):  
S. Suresh Ramanan ◽  
T. K. Kunhamu
Keyword(s):  
Population Structure ◽  
Andhra Pradesh ◽  
Population Distribution ◽  
Natural Habitat ◽  
Wildlife Sanctuary ◽  
Pterocarpus Santalinus ◽  
Red Sanders ◽  
Density Population

Response to the published article "A study on the density, population structure and regeneration of Red Sanders (Pterocarpus santalinus) (Fabales: Fabaceae) in a protected natural habitat of Sri Lankamalleswara Wildlife Sanctuary, Andhra Pradesh, India" by Ankalaiah et al. 2017. 

Factors affecting crop field use by Blackbuck in Krishnasaar Conservation Area, Nepal.

2021 ◽  
Author(s):  
Rohit Raj Jha ◽  
Gopal Khanal ◽  
Kavita Isvaran
Keyword(s):  
Spatial Pattern ◽  
Natural Habitat ◽  
Core Area ◽  
Crop Damage ◽  
Mitigation Measures ◽  
Conservation Area ◽  
Generalist Herbivore ◽  
Crop Fields ◽  
The Core ◽  
Crop Field

Abstract Reducing crop damage caused by wildlife in forest-agricultural land interface requires an understanding of the spatial pattern of crop field use and its drivers. We assessed factors influencing the spatial pattern of crop-field use by a generalist wild herbivore, blackbuck (Antilope cervicapra), in the agriculture-dominated landscape of Krishnasaar Conservation Area (KrCA) in low land Nepal. We systematically selected 103 crop fields distributed over the entire KrCA (within both core area and community development zone) and surveyed them three times over three months, resulting in 309 sampling occasions. We found that crop use by blackbuck was highly localized inside core area (only 15% of the sampled crop fields were used) even though crop fields outside the core area were accessible and had limited mitigation measures applied. The linear mixed effect modeling showed that probability of crop field use by blackbuck increased with size of the crop field, implying the magnitude of foraging benefits affects blackbuck crop-use decisions. The presence of current mitigation measures (e.g., scare crow, vegetative fencing) did not have discernible influence on probability of crop field use, so did the types of the crops, and distance of crop fields from the center of the core area. Overall, our results suggest that generalist herbivore, blackbuck, employs low gain-low risk strategy when using crop fields in natural habitat-agricultural. Minimizing current level of crop damage by blackbuck will require working closely with farmers who owns lands close to the natural habitat (core area) to apply appropriate mitigation measures.

scholarly journals New records, potential distribution, and conservation of the Near Threatened cave bat Natalus macrourus in Brazil

Oryx ◽  
2017 ◽  
Vol 52 (3) ◽  
pp. 579-586 ◽  
Author(s):  
Mariana Delgado-Jaramillo ◽  
Eder Barbier ◽  
Enrico Bernard
Keyword(s):  
Potential Distribution ◽  
Natural Habitat ◽  
Strong Association ◽  
Species Conservation ◽  
Annual Rainfall ◽  
Limiting Factor ◽  
Mining Operations ◽  
Environmental Suitability ◽  
Area Of Occupancy ◽  
Near Threatened

AbstractSpecies with specific roosting, foraging or breeding requirements are particularly vulnerable to habitat loss and degradation. For bats, the availability and environmental condition of caves can be a limiting factor. The cave specialist Natalus macrourus (formerly Natalus espiritosantensis) is categorized as Near Threatened on the IUCN Red List but as Vulnerable in Brazil, based on a projected population reduction and a decline in its area of occupancy, extent of occurrence and/or quality of habitat. There is a lack of knowledge about the species’ distribution, natural history and ecology, information that is required for conservation. Using new occurrence data and potential distribution modelling we evaluated the distribution of N. macrourus in Brazil, analysed pressures on and threats to the species, and assessed the species’ conservation needs. Natalus macrourus is positively associated with areas with higher probability of cave occurrence and negatively associated with areas of high variation in mean daily temperature and mean annual rainfall. Areas with high environmental suitability for N. macrourus correspond to only 3% of the potential distribution modelled. We estimate that the species has already lost 54% of its natural habitat and that there is < 35% of habitat remaining in areas with high environmental suitability. We calculated that approximately half of the caves in areas with high environmental suitability are < 5 km from mining operations and only 4% of the species’ potential distribution lies within protected areas. Given the strong association of N. macrourus with caves, it is important to protect these habitats, and we recommend that caves where the species is present should receive immediate protection.

scholarly journals Conservation implications of the drinking habits of Black-cheeked Lovebirds Agapornis nigrigenis in Zambia

2005 ◽  
Vol 15 (4) ◽  
pp. 383-396 ◽  
Author(s):  
LOUISE S. WARBURTON ◽  
MICHAEL R. PERRIN
Keyword(s):  
Natural Habitat ◽  
External Disturbance ◽  
Early Morning ◽  
Annual Rainfall ◽  
Limiting Factor ◽  
Drinking Behaviour ◽  
Water Supplies ◽  
Drinking Habits ◽  
Conservation Implications ◽  
Artificial Water

Since 1950, the annual rainfall in the habitat of Black-cheeked Lovebirds Agapornis nigrigenis has decreased, increasing dependence on artificial water supplies. In this study, the seasonal water requirements and drinking behaviour of the lovebirds in their natural habitat were investigated. During the dry season, lovebirds drank at the same water-point in the early morning and late afternoon. Flock sizes of birds at drinking sites ranged from 1 to 175 individuals. Birds from one locale all drank at the same waterhole. Black-cheeked Lovebirds were vigilant and highly cautious drinkers that did not drink at waterholes when disturbed by humans or livestock. The implications for conservation of the species are discussed. Since water availability is a limiting factor for the Black-cheeked Lovebird, gradual desiccation of its habitat has caused the reduction of its small distributional range. Because of increasing dependence on artificial water supplies in a highly localized distribution the priority for conservation management of the species must be creating and maintaining water resources with minimal external disturbance.

scholarly journals Impact Of Seawall Development To The Sulawesi Fishermen Community In Pambusuang Village

2021 ◽  
Vol 2 (4) ◽  
pp. 80-98
Author(s):  
Muhammad Zulkifli
Keyword(s):  
River Flow ◽  
Natural Habitat ◽  
Structured Interview ◽  
Participatory Development ◽  
Community Response ◽  
Qualitative Approach ◽  
Coastal Protection ◽  
Limited Area ◽  
Development Approach ◽  
The Impact

A coastal protection structure mostly built to protect human from the detructive wind and wave energy. The various option of type and design has been invented in the development. This study investigates the impact of seawall development in Pambusuang Village, West Sulawesi. This study will examine the fishery activity change after the development of seawall. The benefit and disadvantages of the seawall structure to the community also as well as the community response to address the impact of seawall development will be explored in this study. A mix quantitave and qualitative approach is used in this study. A set of questionnare has been distributed and structured interview to selected infromant were also conducted. The study found that fishermen has changed their docking behavior due to the limited area to docking. Moreover, the respondent believes that seawall has properly function to halt erosion, protect their house and other infrastructure from the wave attack. The other issues is the disharmony between pro and contra seawall development, inundated river flow and damage of natural habitat. The response of the community to addressing some impact of the seawall development such as their adaptation to the sloping gate between the seawall, the use of traditional anti fouling painting and their suggestion to construct breakwater disattached from the shoreline. The findings above has been formed the basis of recommendations to have a participatory development approach and experience sharing between the parties in the community to adapt with the impact of seawall development.

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