Understanding the interplay of temperature and moisture on the germination niche to improve management of threatened species impacted by mining

نویسندگان

چکیده

The return of vegetation to mined lands often requires broadcast seeding diverse native seed mixes. However, seeds are highly adapted germination windows with specific hydrothermal thresholds that maximize the likelihood seedling survival, and post-mining landscapes typically offer markedly different conditions than pre-disturbance ecosystems. According niche theory, generalist species should exhibit broader performance niches specialist taxa, which may influence success recruitment from in ecological restoration. To test this assumption, impact stress (incubation temperature (10–30°C) osmotic potential (−0.8 0 MPa)) on time 50% (t50) maximum (Gmax) was compared between two narrow-range conservation concern (Acacia woodmaniorum A. karina) restricted mining-impacted Banded Ironstone Formations (BIF) three broadly distributed congenerics (A. assimilis, exocarpoides, ramulosa). study were congruent their habitats. range-restricted taxa more tolerant widely suggesting tolerance greater by both Acacia is likely be adaptive establishment uncontested space. Complex interactions thermal water suggest these environmental gradients shape as well patterns plant diversity BIF This highlights importance quantifying dimensions implications for performance, will aid future restoration efforts micro-endemic impacted mining.

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ژورنال

عنوان ژورنال: Restoration Ecology

سال: 2022

ISSN: ['1526-100X', '1061-2971']

DOI: https://doi.org/10.1111/rec.13708