Demographic responses of boreal-montane orchid Malaxis monophyllos (L.) Sw. populations to contrasting environmental conditions

• Autorzy: Jermakowicz E. , Brzosko E.
• Języki publikacji: EN

Abstrakty

EN

In an age of changes in species’ geographical ranges, compounded by climatic and anthropogenic impacts, it become important to know which processes and factors influence plant populations and their persistence in the long term. Here we investigated dynamic and fitness components in twelve populations of Malaxis monophyllos (L.) Sw., situated in different geographical (regions) and ecological (type of habitat) units. Although M. monophyllos is a rare species, characterized by highly fragmented, boreal-montane distribution range, in last few decades it successfully colonized secondary habitats in Polish uplands. Our results indicate that M. monophyllos is represented mainly by small populations, which annual spatial and temporal changes might be very high, what affects the ephemeral character of these populations, regardless of the region and type of habitat. This dynamic structure, in turn, is caused by intensive exchange of individuals in populations, as well as by their short above-ground life span. Despite the large range of variation in size and reproductive traits, we can distinguish some regional patterns, which indicate boreal region as the most optimal for M. monophyllos growth and persistence in the long term, and with montane and upland/anthropogenic populations, due to lower reproductive parameters, as the most threatened. Although it should be considered that anthropogenic populations, despite their lower reproductive parameters and instability in the long term, present an intermediate, geographical and ecological character, therefore they may be valuable in shaping, both M. monophyllos’ future range, as well as its potential for response on ongoing and future changes. In general, reproduction is the main factor differentiating of M. monophyllos populations in regions, and we can suspect that it may become the cause of the future differentiation and isolation of these populations, occurring with progressive range fragmentation.

Słowa kluczowe

EN

demographic response; orchid; white adder's mouth; Malaxis monophyllos; plant population; environment condition; population dynamics; red list; plant species; anthropogenic habitat

• Wydawca: -
• Czasopismo: Acta Societatis Botanicorum Poloniae
• Rocznik: 2016
• Tom: 85
• Numer: 1
• Opis fizyczny: Article 3488 [17p.], fig.,ref.

Twórcy

autor

Jermakowicz E.

• Institute of Biology, University of Bialystok, K.Ciolkowskiego 1j, 15-245 Bialystok, Poland

autor

Brzosko E.

• Institute of Biology, University of Bialystok, K.Ciolkowskiego 1j, 15-245 Bialystok, Poland

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Identyfikatory

DOI

10.5586/asbp.3488