Consequences of forest fragmentation for polyporous fungi at two spatial scales

Penttilä, Reijo; Lindgren, Mariko; Miettinen, Otto; Rita, Hannu; Hanski, Ilkka

doi:10.1111/j.2006.0030-1299.14349.x

Cited by 106 publications

(101 citation statements)

References 58 publications

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“…some plant species, invertebrates Penttilä et al 2006). We found that 47.7% of all the currently afforested areas constitute sites where forests previously occurred.…”

Section: Discussionmentioning

confidence: 89%

Forest habitat loss and fragmentation in Central Poland during the last 100 years

Mazgajski¹,

Żmihorski²,

Abramowicz³

2010

Silva Fenn.

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The process of habitat fragmentation consists of two components â habitat loss and fragmentation per se. Both are thought to be among the most important threats to biodiversity. However, the biological consequences of this process such as species occurrence, abundance, or genetic structure of population are driven by current, as well as previous, landscape configurations. Therefore, historical analyses of habitat distribution are of great importance in explaining the current species distribution. In our analysis, we describe the forest fragmentation process for an area of 178 km in the northern part of Mazowsze region of central Poland. Topographical maps from the years 1890, 1957 and 1989 were used. Over the 100-year period, forest coverage in this area changed from 17% to 5.6%, the number of patches increased from 19 to 42, while the area of the forest interior decreased from 1933 ha to 371 ha. The two components of fragmentation were clearly separated in time. Habitat loss occurred mainly during the first period (1890â1957) and fragmentation per se in the second (1957â1989). Moreover, we recorded that only 47.7% of all the currently (in 1989) afforested areas constitute sites where forests previously occurred (in 1890 and 1957). For forest dwelling organisms characterized by low dispersal abilities, the effective forest coverage seems to be a half of the real forest area in the studied landscape. New afforestations should be planned especially to increase those patches which contain ancient forest, where various plants and animals sensitive to fragmentation may have survived.2

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“…some plant species, invertebrates Penttilä et al 2006). We found that 47.7% of all the currently afforested areas constitute sites where forests previously occurred.…”

Section: Discussionmentioning

confidence: 89%

Forest habitat loss and fragmentation in Central Poland during the last 100 years

Mazgajski¹,

Żmihorski²,

Abramowicz³

2010

Silva Fenn.

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“…50-100 m 3 ha -1 . The importance of fragmentation history has also been documented for fungi (polypores) on dead wood (Penttilä et al 2006, Berglund et al 2011. In study areas in southern Finland with the longest history of old forest fragmentation and the lowest amounts of relevant qualities of dead wood, both overall species richness and abundance of the most threatened species were lower than in study areas in eastern Finland with a shorter history of old forest fragmentation.…”

Section: Intact Forest Ecosystems and Critical Properties For Biodivementioning

confidence: 89%

Biodiversity, carbon storage and dynamics of old northern forests

Wit

Framstad

Karltun

et al. 2013

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“…The statistical approach originates from an elaboration technique (33) , but we have used it in a more confirmatory spirit like e.g. Penttilä et al (34) and Sah et al (35) . We also tested the hypothesis 'High total dietary P intake affects bone metabolism more harmfully than low intake' by comparing averages of S-PTH in the first and fourth total P intake quartiles after adjusting for all relevant covariates.…”

Section: Discussionmentioning

confidence: 99%

Habitual high phosphorus intakes and foods with phosphate additives negatively affect serum parathyroid hormone concentration: a cross-sectional study on healthy premenopausal women

Kemi

Rita

Kärkkäinen

et al. 2009

Public Health Nutr.

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Objective: Foods can contain natural phosphorus (NP) and phosphate-containing food additives (AP). The main objective of the present study was to investigate whether NP and AP of habitual diets differ in their effects on markers of Ca metabolism. We also investigated the impact of total habitual dietary P intake on markers of Ca metabolism. Design: Cross-sectional study. Fasting blood samples were collected and participants kept a 4 d food record, from which dietary intake of total P and the consumption of NP (milk and cheese, excluding processed cheese) and AP (processed cheese) sources were calculated. Participants were divided into groups according to their NP-and AP-containing food consumption and into quartiles according to their total P intake. Setting: Southern Finland. Subjects: One hundred and forty-seven healthy premenopausal women aged 31-43 years. Results: Relative to the lowest total dietary P quartile, mean serum parathyroid hormone (S-PTH) concentration was higher (P 5 0?048, analysis of covariance (ANCOVA)) and the mean serum ionized Ca concentration lower (P 5 0?016, ANCOVA) in the highest P intake quartile. Mean S-PTH concentrations were higher among participants who consumed processed cheese (P 5 0?027, ANCOVA) and less milk and other cheese than processed cheese (P 5 0?030, ANCOVA). Conclusions: High total habitual dietary P intake affected S-PTH unfavourably. Furthermore, phosphate additives may have more harmful effects on bone than other P sources, as indicated by higher mean S-PTH concentration among participants who consumed AP-containing foods. Because of the high dietary P intake and current upward trend in consumption of processed foods in Western countries, these findings may have important public health implications. Keywords Dietary phosphorusPhosphate additives Natural phosphorus Parathyroid hormone P unlike Ca is abundant in many food sources, as foods can contain both natural P and phosphate-containing food additives. In many countries, P intake is two-to threefold higher (1)(2)(3)(4) than the dietary reference intake for P (700 mg/d) (5) , while Ca intake is often below recommended levels (6)(7)(8)(9) . Such a combination, or even a high P intake alone, may be harmful to bone through increased parathyroid hormone (PTH) secretion (10)(11)(12)(13) .PTH is a major regulator of Ca and bone metabolism, and continuous excessive PTH secretion increases bone turnover (14,15) . Dietary P has been found to increase serum PTH (S-PTH) concentration by decreasing serum ionized Ca (S-iCa) concentration (16) and by directly affecting PTH secretion (17) , probably through the Na-dependent phosphate co-transporter in the parathyroid glands (18) . In contrast to continuous excessive PTH secretion, intermittent administration of PTH stimulates bone formation (19) and increases trabecular bone mass (20) . Therefore, in vivo, the combined effect of P and PTH on bone metabolism is complex and may vary from an acute situation to a long-term one.P sources may differ in their effects on Ca and ...

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Consequences of forest fragmentation for polyporous fungi at two spatial scales

Cited by 106 publications

References 58 publications

Forest habitat loss and fragmentation in Central Poland during the last 100 years

Forest habitat loss and fragmentation in Central Poland during the last 100 years

Biodiversity, carbon storage and dynamics of old northern forests

Habitual high phosphorus intakes and foods with phosphate additives negatively affect serum parathyroid hormone concentration: a cross-sectional study on healthy premenopausal women

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