scholarly journals Pollination ecology of Brownlowia tersa (Malvaceae), a Near Threatened non-viviparous true mangrove shrub

2019 ◽  
Vol 11 (9) ◽  
pp. 14119-14127
Author(s):  
Aluri Jacob Solomon Raju

Brownlowia tersa is a low-ground semi-evergreen shrub species.  The phenological events occur sequentially—leaf fall, leaf flushing, flowering and fruiting from April to November.  It is hermaphroditic, protandrous, self-compatible, facultative xenogamous, and melittophilous involving worker honey bees, small male and female carpenter bees and male and female cuckoo bees.  Of these, worker honey bees and female carpenter bees forage for both pollen and nectar while male carpenter bees and both sexes of cuckoo bees forage exclusively for nectar.  Cuckoo bees are very important for cross-pollination because they are swift fliers and visit many flowers from different plants in the shortest time.  Carpenter bees and honey bees are largely important for self-pollination as they are not fast fliers and tend to spend more time at each flower for forage collection.  The flowers have a specialized pollination mechanism to resort to autonomous autogamy if not pollinated but this mode of pollination is subject to the availability of pollen in its own anthers.  Fruit is a 1-seeded follicle produced from a single carpel of the flower.  It is indehiscent and floats in tidal water when detached from the plant.  When settled in muddy substratum, it breaks open to expose the seed which germinates and produces a new plant in quick succession.  The study reports that the plant is highly threatened due to different human economic activities taking place in the area and hence immediate in situ conservation measures are required for its protection and propagation. 

2020 ◽  
Vol 32 (4) ◽  
pp. 1410-1417
Author(s):  
Omolola Oluwakemi AJAYI ◽  
◽  
Tembi M. TICHAAWA ◽  

When compared to in situ conservation sites like national parks and game reserves in Nigeria, zoos are the most visited wildlife tourism destinations given their proximity to people and close interactions with wildlife. This study explored the characteristics of visitors and the image they possess about zoos. A total of 1529 visitors were sampled using a structured questionnaire in four prominent Nigerian zoos in the southwest zone. The results revealed that the majority of visitors were single, young and mid adult male and female Nigerians within the age range of 18 -37 years. The foremost image of visitors about a zoo is that of close wildlife experience, recreation and entertainment, however, conservation was least acknowledged. Only age was found to have a significant relationship with the destination image. The st udy concludes that zoo managers should continually employ various strategies in projecting the right image of zoos. The study extends current re search on zoos by highlighting so far, the uninvestigated image of zoos in Nigeria and documenting practical implications.


2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Elly Lestari Rustiati ◽  
Priyambodo Priyambodo ◽  
Yanti Yulianti ◽  
Eko Agus Srihanto ◽  
Dian Neli Pratiwi ◽  
...  

Way Kambas National Park (WKNP) is home of five protected big mammals including sumatran elephants.  It shares its border with 22 of 37 villages surrounding the national park.  Understanding their existence in the wild is a priority, and  wildlife genetics is a crucially needed. Besides poaching and habitat fragmentation, wildlife-human conflict is one big issue.  Elephant Training Center (ETC) in WKNP is built for semi in-situ conservation effort on captive sumatran elephants that mainly have conflict histories with local people.  Participative observation and bio-molecular analysis were conducted to learn the importance of captive Sumatran elephant for conservation effort.  Through captive sumatran elephants, database and applicable methods are expected to be developed supporting the conservation of their population in the wild.  Participative observation and molecular identification was carried on captive sumatran elephants in ETC, WKNP under multiple year Terapan grant of Ministry of Research and Technology Higher Education, Indonesia. Gene sequence and cytological analyses showed that the captive sumatran elephants are closely related and tend to be domesticated.  Translocation among ETC to avoid inbreeding, and maintaining the captive sumatran elephant as natural as possible are highly recommended. Developing genetic database can be a reference for both captive and wild sumatran elephants.


2013 ◽  
Vol 357-360 ◽  
pp. 2118-2121
Author(s):  
Ling Li Jia ◽  
Heng Cui

In the process of land consolidation in Chengdu Plain, Linpan protection is an important content. At present, some protection types of Linpan have been formed in Chengdu area, such as agriculture, rural tourism, special industry and settlement type and so on. Many protected modes were explored, such as the natural subsidies, in situ conservation, comprehensive development, off-site reconstruction, etc. But there are still some questions, do not pay attention to protect Linpan ecological pattern plate function transformation, the architectural style of hybrid, protection methods are not flexible, evaluation standard is not perfect, the public participation is not enough and other issues, these problems need to be continuously optimized and improved in the future.


Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 638
Author(s):  
Marcelo B. Medeiros ◽  
José F. M. Valls ◽  
Aluana G. Abreu ◽  
Gustavo Heiden ◽  
Suelma Ribeiro-Silva ◽  
...  

This study presents the status of ex situ and in situ conservation for the crop wild relatives of rice, potato, sweet potato, and finger millet in Brazil, and the subsequent germplasm collection expeditions. This research is part of a global initiative entitled “Adapting Agriculture to Climate Change: Collecting, Protecting, and Preparing Crop Wild Relatives” supported by the Global Crop Diversity Trust. Species of the primary, secondary, and tertiary gene pools with occurrences reported in Brazil were included: Oryza alta Swallen, O. grandiglumis (Döll) Prod., O. latifolia Desv., O. glumaepatula Steud., Eleusine tristachya (Lam.) Lam., E. indica (L.) Gaertn., Solanum commersonii Dunal, S. chacoense Bitter, Ipomoea grandifolia (Dammer) O’Donell, I. ramosissima (Poir.) Choisy, I. tiliacea (Willd.) Choisy, I. triloba L., and I. cynanchifolia Meisn. The status of the ex situ and in situ conservation of each taxon was assessed using the gap analysis methodology, and the results were used to plan 16 germplasm collection expeditions. Seeds of the collected material were evaluated for viability, and the protocols for seed germination and cryopreservation were tested. The final conservation score, resulting from the gap analysis and including the average of the ex situ and in situ scores, resulted in a classification of medium priority of conservation for all the species, with the exception of I. grandifolia (high priority). The total accessions collected (174) almost doubled the total accessions of these crop wild relatives incorporated in Embrapa’s ex situ conservation system prior to 2015. In addition, accessions for practically absent species were collected for the ex situ conservation system, such as Ipomoea species, Eleusine indica, and Solanum chacoense. The methods used for dormancy breaking and low temperature conservation for the Oryza, Eleusine, and Ipomoea species were promising for the incorporation of accessions in the respective gene banks. The results show the importance of efforts to collect and conserve ex situ crop wild relatives in Brazil based on previous gap analysis. The complementarity with the in situ strategy also appears to be very promising in the country.


Author(s):  
Wiguna Rahman ◽  
Joana Magos Brehm ◽  
Nigel Maxted ◽  
Jade Phillips ◽  
Aremi R. Contreras-Toledo ◽  
...  

AbstractConservation programmes are always limited by available resources. Careful planning is therefore required to increase the efficiency of conservation and gap analysis can be used for this purpose. This method was used to assess the representativeness of current ex situ and in situ conservation actions of 234 priority crop wild relatives (CWR) in Indonesia. This analysis also included species distribution modelling, the creation of an ecogeographical land characterization map, and a complementarity analysis to identify priorities area for in situ conservation and for further collecting of ex situ conservation programmes. The results show that both current ex situ and in situ conservation actions are insufficient. Sixty-six percent of priority CWRs have no recorded ex situ collections. Eighty CWRs with ex situ collections are still under-represented in the national genebanks and 65 CWRs have no presence records within the existing protected area network although 60 are predicted to exist in several protected areas according to their potential distribution models. The complementarity analysis shows that a minimum of 61 complementary grid areas (complementary based on grid cells) are required to conserve all priority taxa and 40 complementary protected areas (complementary based on existing protected areas) are required to conserve those with known populations within the existing in situ protected area network. The top ten of complementary protected areas are proposed as the initial areas for the development of CWR genetic reserves network in Indonesia. It is recommended to enhanced coordination between ex situ and in situ conservation stakeholders for sustaining the long term conservation of CWR in Indonesia. Implementation of the research recommendations will provide for the first time an effective conservation planning of Indonesia’s CWR diversity and will significantly enhance the country’s food and nutritional security.


Author(s):  
M. Grum ◽  
V. Guerette ◽  
B. Kone ◽  
A. Sidibe ◽  
M. Kouressy ◽  
...  

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