Poland’s border wall threatens ancient forest

Science ◽  
2021 ◽  
Vol 374 (6571) ◽  
pp. 1063-1063
Author(s):  
Bogdan Jaroszewicz ◽  
Katarzyna Nowak ◽  
Michał Żmihorski
Keyword(s):  
2000 ◽  
Vol 151 (11) ◽  
pp. 417-424 ◽  
Author(s):  
Ernst Zürcher

Ancient forest utilization regulations regarding felling dates and wood use are compared to the moon cycles. Furthermore, moon-phase related investigations with regard to germination behaviour, insect infestation and durability of the wood are presented.


2010 ◽  
Vol 40 (5) ◽  
pp. 904-916 ◽  
Author(s):  
Claudia R. Copley ◽  
Neville N. Winchester

In anthropogenically disturbed forested riparian ecosystems that contain vagile organisms, we expect dispersal to be a factor that determines patterns of diversity that differ from similar, but continuous, undisturbed habitats. We studied the effects of habitat alteration on community composition by characterizing the spider assemblage of a riparian corridor in an ancient forest and a regenerating coniferous forest in the Carmanah Valley, Vancouver Island, British Columbia. Spiders were collected over a 15 month period using Malaise traps set along transects perpendicular to Carmanah Creek. We recorded 76 genera and 113 species representing 23 families. In both the regenerating coniferous forest and the ancient forest, a large proportion of the species were of the family Linyphiidae. Species abundance was similar in the two habitats but diversity was greater in the regenerating coniferous forest. The ancient forest was dominated by the web-building guild. Spatial autocorrelation analysis revealed no overall pattern in the species assemblages relative to the riparian corridor. Bray–Curtis similarity measure and principal components analysis results indicate that spider assemblages in the two habitats were significantly different in composition. These results suggest that habitat changes affect assemblages of spiders by altering dispersal, and these responses are evident a decade after disturbance.


2012 ◽  
Vol 22 (2) ◽  
pp. 123-133 ◽  
Author(s):  
Jan Plue ◽  
Ken Thompson ◽  
Kris Verheyen ◽  
Martin Hermy

AbstractThis study investigates how methodological aspects of seed-bank sampling affect seed-bank records in temperate deciduous forests. We focused explicitly on seed-bank records of ancient forest species, which are assumed to lack a persistent seed bank; a hypothesis suspected to be partly due to methodological shortcomings. Through a quantitative review of 31 seed-bank studies in temperate deciduous forests of central and north-west Europe, we quantified the role of sampling methodology in constraining total seed-bank records and seed-bank records of ancient forest species (γ-diversity, average species' retrieval frequency and average seed density). A major methodological trade-off was established between sampled plot area and the number of plots: at an increased number of plots, the area sampled per plot decreased significantly. The total surface area sampled in a study was the primary determinant of γ-diversity, both for overall species richness and for ancient forest species richness. A high retrieval frequency of ancient forest species indicated that few plots were intensively sampled. The parallel increase in total species richness and ancient forest species richness and the non-significance of their ratio in relation to methodological variables suggests that ancient forest species are not particularly rare in the seed bank compared to other species. These results imply that sampling methodology has a far-reaching impact on seed-bank records such as γ-diversity, the detection of ancient forest species and ultimately seed-bank composition. We formulate a set of guidelines to improve the quality of seed-bank studies in temperate deciduous forests.


Radiocarbon ◽  
2010 ◽  
Vol 52 (3) ◽  
pp. 1411-1421 ◽  
Author(s):  
C D Shen ◽  
P Ding ◽  
N Wang ◽  
W X Yi ◽  
X F Ding ◽  
...  

The historical evolution of an ancient forest that developed at Gaoyao, south China, can be divided into 4 stages of radiocarbon intervals (1.1–1.5, 2.0–3.5, 3.6–4.0, and 4.3–4.9 ka) in which the last 3 stages all developed in a wetland and formed humic layers of 2.0, 0.5, and 0.7 m depth, respectively. The humic layers were interrupted by 2 white-gray silty clay layers that most likely formed during climate fluctuations. Four drought events were identified during the evolution of the ancient forest, occurring around 4.3, 3.6, 2.0, and 1.1 ka, respectively, with durations of ∼1000 14C yr. These events are consistent with other records both in low- and high-latitude areas, in particular with the little ice ages occurring since the mid-Holocene. Precipitation likely increased from 5.0 to 3.6 ka in south China, then decreased, which is probably the main cause for the development as well as the demise of the ancient forest.


Author(s):  
Frederick J. Swanson

The H. J. Andrews Experimental Forest Long-Term Ecological Research (LTER) program has nurtured a large, highly interdisciplinary community that has been a wonderful seedbed for emergence of ideas from our group, and for my own growth as a scientist, educator, collaborator, and communicator. Collaborations for me as an individual and within the Andrews forest group have grown over the decades: research–land management since the 1950s, ecology–earth sciences since the early 1970s, biophysical sciences–social sciences since the early 1990s, and humanities–arts–sciences over the past dozen years. As a US Forest Service scientist in seamless collaboration with academic and land manager colleagues, the stable yet dynamic community that the LTER program fosters has served as a great platform for connecting science lessons with society through many means, ranging from development of regional conservation strategies and landscape management plans to storytelling. This is a practice of citizenship by individual scientists and by a science-based team. The sustained learning that the LTER program has underwritten gives scientists a foundation for communicating findings from science and discussing their implications with the public, and the forest itself is a great stage for these conversations. I have had a career of immersion in the International Biological Program (IBP) and in the LTER program since its inception. After completing graduate studies in geology in 1972, I had the good fortune to join the early stages of IBP in the Coniferous Forest Biome Project at the H. J. Andrews Experimental Forest (AND) in the Cascade Range of Oregon. Our team of forest and stream ecologists, and a few earth scientists, had the decade of the 1970s to coalesce, mature, and craft stories of the ecosystems of the Pacific Northwest. The Andrews forest was a wonderful place to do that. It has a complex, ancient forest with nearly 100-m tall trees and fast, cold, clear, mountain streams whose beauty and chill takes your breath away. The year 1980 was pivotal for the group in three ways. First, Jerry Franklin led a synthesis of our team’s knowledge of old-growth forests, which set the stage for major transformation in public perception and policy toward federal forests a decade later and, incidentally, changed our lives.


2019 ◽  
Vol 84 (3) ◽  
pp. 516-530 ◽  
Author(s):  
Jacob K. Earnshaw

Culturally modified trees (CMTs) provide tangible evidence of long-term forest use by Indigenous peoples. In Northwest Coast cedar forests, this record rarely spans beyond the last three centuries because older bark-harvest scars have been obscured through taphonomic processes such as natural healing and decay. Thus, archaeological visibility and identification are hindered. Here, I recover chronologies of ancient forest harvesting using a post-impact assessment methodology of targeting old-growth clear-cuts in southern Nuu-chah-nulth territories on the west coast of Vancouver Island, British Columbia, Canada. Bark-peeling scars are identified and dated in cross section by growth-ring patterns of recently logged trees. Approximately half of all bark-peeling scars are “embedded” inside healing lobes, suggesting at least half of all such CMTs are effectively invisible in standing forests. Features in these post-impact surveys predated those discovered in conventional archaeological impact assessments by a mean of almost a century. Additionally, one of the oldest continually used cultural forests ever recorded, dating to AD 908, is found in the Toquaht Nation traditional territory. These findings uncover measurable frequencies of cedar-bark harvesting generations prior to the contact period and reveal the inadequacy of heritage protections for old-growth cedar stands.


PLoS ONE ◽  
2019 ◽  
Vol 14 (7) ◽  
pp. e0219620 ◽  
Author(s):  
Ewa Stefańska-Krzaczek ◽  
Monika Staniaszek-Kik ◽  
Katarzyna Szczepańska ◽  
Tomasz H. Szymura

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