مدیریت دانش - knowledge management
عنوان انگلیسی مقاله:
Informed conservation management of rare tree species needs knowledge of species composition, their genetic characteristics and ecological niche
ترجمه فارسی عنوان مقاله:
مدیریت حفاظت از حفاظت از گونه های نادر درختی، نیاز به دانش ترکیب گونه ها، ویژگی های ژنتیکی آنها و طاقچه های زیست محیطی
ScienceDirect- Elsevier- Forest Ecology and Management, 483 (2021) 118771: doi:10:1016/j:foreco:2020:118771
Woodland nature reserves must be scientifically assessed so that subsequent management leads to optimal
conservation of biodiversity. This entails knowledge of the species composition, the genetics of the local pop-
ulations and their ecology. Here we assess Tilia species in the Bavarian Forest National Park (BFNP), a large
mixed coniferous and deciduous forest in South-Eastern Germany. Tilia occurs here at low density, as in many
other mixed forests in Central and Northern Europe. Therefore, results are not only relevant to BFNP but also to
Exhaustive sampling resulted in the collection of 113 mature trees that were genotyped using 20 microsatellite
markers, derived from both T. cordata and T. platyphyllos. For the first time, size and aspect of trees, and their
community association were contrasted between the species. Genotyping confirmed that T. platyphyllos,
T. cordata and their hybrid (T. x europaea) were present in the BFNP and both species deserve conservation.
T. platyphyllos has a higher genetic diversity for both sets of markers than T. cordata, confirming earlier work.
Both species showed genetic diversity comparable to other populations in Central Europe, which is likely to be
sufficient for the maintenance of the species in the short term. However, increasing the number of trees, ensuring
local sources are used, and gene flow from surrounding forests over the next decennia may be crucial for long-
Further, within the T. platyphyllos group there was a set of 11 trees that were distinct from the others: they had
a lower genetic diversity and were shorter. We hypothesise that these were planted and should not be used for
propagation and augmentation. Most saplings analysed appeared to derive from asexual propagation (36 out of
41), although a few (five out of 41) were novel genotypes. This means that, currently, there is some, but rather
T. cordata was found at a lower altitude and less steep terrain than T. platyphyllos and the hybrid. The hybrid
was taller than the two species, while the diameter at breast height was smallest in T. cordata. T. cordata shows a
preference for mixed and coniferous forests, while T. platyphyllos occurs mostly in deciduous forests.
Our results indicate that biodiversity at the species and genetic level as well as species’ ecology have to be
considered in order to guide informed conservation management. These results form the basis to recommend
conservation management improving the long-term viability of Tilia in the BFNP and other mixed forests.
keywords: جنگلداری | تیلیا | تنوع ژنتیکی | ترجیح زیستگاه | مناطق حفاظت شده | هیبریداسیون | جنگلکاری | Forestry | Tilia | Genetic diversity | Habitat preference | Protected areas | Hybridisation | Silviculture
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