scholarly journals Fungus gnats (Diptera: Bolitophilidae, Diadocidiidae, Keroplatidae and Mycetophilidae) new to Finland

2006 ◽  
Vol 17 (2) ◽  
Author(s):  
Alexei Polevoi ◽  
Jevgeni Jakovlev ◽  
Alexander Zaitzev
Keyword(s):  
Male Genitalia ◽  
Large Scale ◽  
General Distribution ◽  
Original Material ◽  
Old Growth ◽  
Fungus Gnats ◽  
Old Growth Forests ◽  
First Time ◽  
Eastern Finland

Thirty-seven species of fungus gnats new to Finland are reported. Eleven of these are reported in Fennoscandia for the first time: Diadocidia fissa Zaitzev, Macrocera estonica Landrock, M. nigricoxa Winnertz, M. pusilla Meigen, Boletina pallidula Edwards, Mycetophila morata Zaitzev, M. ostentanea Zaitzev, Trichonta nigritula Edwards, T. subterminalis Zaitzev & Menzel, Neoempheria winnertzi Edwards and Neuratelia sintenisi Lackschewitz. The records are based on original material collected in large-scale trapping projects in Southern and Eastern Finland mainly in old-growth forests during 1997–1998. Detailed information on Finnish findings, and data on the general distribution of the species are given. Several species are known with only one (typematerial) or a few previous records ranging from Norway to Sakhalin. For two poorly-known species, Neuratelia sintenisi Lackschewitz and Rymosia pinnata Ostroverkhova, new figures of male genitalia are presented.

scholarly journals Boletina dispectoides sp.n. and six other species of fungus gnats (Diptera: Mycetophilidae) new to Finland

2007 ◽  
Vol 18 (4) ◽  
pp. 211-217 ◽  
Author(s):  
Jevgeni Jakovlev ◽  
Jouni Penttinen
Keyword(s):  
New Species ◽  
Dead Wood ◽  
General Distribution ◽  
Fungus Gnats ◽  
First Time ◽  
A New Species ◽  
Malaise Traps

Boletina dispectoides Jakovlev & Penttinen sp.n., a new species of the Boletina nitida group is described. In addition, six other species of fungus gnats are reported from Finland for the first time. Manota unifurcata Lundström, 1913 was reared from dead wood. Exechia bicincta Staeger, 1840, Mycetophila forcipata Lundström, 19 13, M. sumavica (Lastovka, 1963), Trichonta tristis (Strobl, 1898) and Sciophila plarisetosa Edwards, 1921 were caught by pit-fall and Malaise traps in southern and central Finland. Detailed information on Finnish records as well as data on the general distribution of the species and their larval microhabitats is given.

Effects of experimental harvesting on spider (Araneae) assemblages in boreal deciduous forests

2008 ◽  
Vol 140 (4) ◽  
pp. 437-452 ◽  
Author(s):  
Christopher M. Buddle ◽  
David P. Shorthouse
Keyword(s):  
Indicator Species ◽  
Boreal Forests ◽  
Large Scale ◽  
Wolf Spider ◽  
Natural Disturbance ◽  
Old Growth ◽  
Partial Cutting ◽  
Clear Cutting ◽  
Old Growth Forests ◽  
Geographic Separation

AbstractTwo large-scale forestry experiments, in Quebec (Sylviculture et aménagement forestiers écosystémique (SAFE)) and Alberta (Ecosystem Management by Emulating Natural Disturbance (EMEND)), were established in the late 1990s to test the effects of alternative silvicultural strategies (e.g., partial cutting) on biodiversity in northern boreal forests. We collected spiders in pitfall traps 2 years after the application of partial-cutting treatments in deciduous stands at EMEND and 6 years after similar treatments in deciduous stands at SAFE. Although we are aware of the challenges imposed by disparate locations and whole-scale experimental methods, our objective was to compare the effects of partial cutting on spider assemblages (diversity and community composition), and in doing so, to formulate a few general statements. Overall, 98 species (6107 individuals) were collected from Alberta and 86 species (3414 individuals) from Quebec. Of these, 44 species were common to both regions. Ordination and indicator-species analyses revealed a distinct effect of geographic separation: the spider assemblages in deciduous stands within the boreal plains ecoregion of Alberta and the boreal shield in Quebec were distinct. However, the effects of partial cutting on spider assemblages within each project were similar: removal of 25%–33% of trees shifted a characteristic old-growth fauna toward one more typical of clearcuts. Indicator-species analysis also revealed the dominance of wolf spider (Lycosidae) species in clearcuts within both experiments and we present evidence that clear-cutting homogenizes spider assemblages. Old-growth forests contain spider faunas that are easily disrupted by moderate partial cutting. In the face of intense harvesting practices, managing for the maintenance of biodiversity and conservation of spider faunas in northern forests will require retention of old-growth forests.

scholarly journals Predicting the potential for old-growth forests by spatial simulation of landscape ageing patterns

2003 ◽  
Vol 79 (3) ◽  
pp. 621-631 ◽  
Author(s):  
Ajith H Perera ◽  
David J.B. Baldwin ◽  
Dennis G Yemshanov ◽  
Frank Schnekenburger ◽  
Kevin Weaver ◽  
...  
Keyword(s):  
Temporal Variation ◽  
Large Scale ◽  
Simulation Modelling ◽  
Spatial Simulation ◽  
Old Growth ◽  
Disturbance Regimes ◽  
Old Growth Forest ◽  
Large Scale Disturbance ◽  
Old Growth Forests ◽  
Spatio Temporal

Planning for old-growth forests requires answers to two large-scale questions: How much old-growth forest should exist? And where can they be sustained in a landscape? Stand-level knowledge of old-growth physiognomy and dynamics are not sufficient to answer these questions. We assert that large-scale disturbance regimes may provide a strong foundation to understand the spatio-temporal ageing patterns in forest landscapes that determine the potential for old growth. Approaches to describe large-scale disturbance regimes range from scenarios reconstructed from historical evidence to simulation of landscapes using predictive models. In this paper, we describe a simulation modelling approach to determine landscape-ageing patterns, and thereby the landscape potential of old-growth forests. A spatially explicit stochastic simulation model of landscape fire–forest cover dynamics was applied to a 1.8 million-ha case study boreal forest landscape to quantify the spatio-temporal variation of landscape ageing. Twenty-five replicates of 200-year simulation runs of the fire disturbance regime, at a 1-ha resolution, generated a suite of variables of landscape ageing and their error estimates. These included temporal variation of older age cohorts over 200 years, survivorship distribution at the 200th year, and spatial tendencies of ageing. This information, in combination with spatial tendency of species occurrence, constitutes the contextual framework to plan how much old-growth forest a given landscape can sustain, and where such forest could be located. Key words: landscape management, old growth, spatial simulation modelling, landscape ecology, boreal forest, Ontario, fire regime simulation, natural forest disturbances, stochastic models, age-class distribution

Use of two population metrics clarifies biodiversity dynamics in large-scale monitoring: the case of trees in Japanese old-growth forests

2010 ◽  
Vol 178 (1-4) ◽  
pp. 85-94
Author(s):  
Mifuyu Ogawa ◽  
Yuichi Yamaura ◽  
Shin Abe ◽  
Daisuke Hoshino ◽  
Kazuhiko Hoshizaki ◽  
...  
Keyword(s):  
Large Scale ◽  
Old Growth ◽  
Old Growth Forests

The demographic structure of European aspen (Populus tremula) populations in managed and old-growth boreal forests in eastern Finland

2007 ◽  
Vol 37 (6) ◽  
pp. 1070-1081 ◽  
Author(s):  
Tarja Latva-Karjanmaa ◽  
Reijo Penttilä ◽  
Juha Siitonen
Keyword(s):  
Protected Areas ◽  
Boreal Forests ◽  
Large Scale ◽  
Populus Tremula ◽  
Managed Forests ◽  
Mature Trees ◽  
Old Growth ◽  
European Aspen ◽  
Eastern Finland

European aspen ( Populus tremula L.) is a keystone species for biodiversity in boreal forests. However, large aspen have largely been removed from managed forests, whereas regeneration and the long-term persistence of mature trees in protected areas are matters of concern. We recorded the numbers of mature (≥20 cm diameter) aspen in old-growth and managed forests in eastern Finland, based on a large-scale inventory (11 400 ha, 36 000 living and dead trees). In addition, saplings and small aspen trees were surveyed on thirty-six 1 ha sample plots. The average volumes of mature living and dead aspen were 4.0 and 1.3 m3/ha in continuous old-growth forests and 0.2 and 0.6 m3/ha in managed forests, respectively. These results indicate that large aspen trees in managed forests are a legacy of the past, when forest landscapes were less intensively managed. We conclude that the long-term persistence of aspen in protected areas can only be secured by means of restoration measures that create gaps large enough for regeneration to occur. More emphasis should be given to sparing aspen during thinning and to retaining mature aspen during regeneration cutting in managed forests.

How much primary coastal temperate rain forest should society retain? Carbon uptake, recreation, and other values

1999 ◽  
Vol 29 (12) ◽  
pp. 1879-1890 ◽  
Author(s):  
G Cornelis van Kooten ◽  
Erwin H Bulte
Keyword(s):  
Opportunity Cost ◽  
Average Method ◽  
Large Scale ◽  
Carbon Sink ◽  
Control Model ◽  
Old Growth ◽  
Market Values ◽  
Temperate Rain Forest ◽  
Old Growth Forests ◽  
Primary Forests

In this study, average and marginal approaches for determining optimal preservation of primary forests on British Columbia's coast are compared. When the market values from timber, mushrooms, etc., and nonmarket benefits (e.g., carbon sink, preservation values) of preserving old-growth forests are considered (where the opportunity cost of preserving such forests are the benefits of commercial forestry foregone), the average method recommends harvest of all remaining old growth. For the marginal approach, a deterministic optimal control model is solved to compute socially optimal stocks of old growth. In this case, the numerical results indicate that large-scale conversion of old-growth forests cannot be justified on economic grounds.

Where to look for basidiomata of Phellinidium pouzarii (Fungi, Hymenochaetaceae), a rare European polypore of montane old-growth forests with fir (Abies)?

Nova Hedwigia ◽  
2019 ◽  
Vol 109 (3) ◽  
pp. 379-397 ◽  
Author(s):  
Jan Holec ◽  
Vladimír Kunca ◽  
Petr Vampola ◽  
Miroslav Beran
Keyword(s):  
Nature Reserves ◽  
European Countries ◽  
Distribution Map ◽  
Old Growth ◽  
Fracture Surfaces ◽  
Old Growth Forests ◽  
First Time

Records of Phellinidium pouzarii from 13 localities in seven European countries were analyzed as for the microhabitat parameters at sites of basidiomata occurrence. The dataset consisted of 45 records out of them 37% were on artificial microhabitats – cut surfaces of fallen fir (Abies) trunks, and 61% on natural positions, mostly lateral and bottom sides of trunks lying on the soil. In the latter case the basidiomata often were very large and thick, forming irregular 'pies' or horizontal strips up to 150 cm long and 5 cm thick. A newly revealed microhabitat is a naked wood of fracture surfaces of fallen trunks broken to several parts. In this case, basidiomata were small, having the area of several cm 2 and thickness of up to 5 mm. Detailed information on parameters of selected trunks helped to reveal that P. pouzarii basidiomata occur both several years after trunk fall and up to 4 decades after trunk death. Basidiomata grow on decorticated wood from early decay stages to the late ones (with maximum records in the medium stages) and they can persist for at least one decade on the same trunk. A distribution map showing currently known European localities was compiled. A record from Romania is published here for the first time. Phellinidium pouzarii has a clear island pattern of occurrence. It is limited to well-preserved montane old-growth forests with fir at the elevations 710–1100 m a. s. l., in all cases protected as nature reserves.

scholarly journals Lichens and related fungi of oak forests of the Petrikovsky district, Gomel Region (Republic of Belarus)

2021 ◽  
Vol 2 (9) ◽  
pp. 40-47
Author(s):  
Alexander Yatsyna ◽  
Keyword(s):  
Oak Forests ◽  
Old Growth ◽  
Red Data Book ◽  
Annotated List ◽  
Old Growth Forests ◽  
Data Book ◽  
First Time

Based on studies of lichenbiota of oak forests of Petrikovsky district (Gomel Region, Republic of Belarus), car-ried out in 2021 in 10 localities, an annotated list, including 100 species of lichens and 5 species – related fungi, was compiled. Lichen Coenogonium luteum is published for the first time for Belarus; 16 species are new for the Gomel Region. Calicium adspersum, Chaenotheca chlorella, Hypotrachyna revolutа and Parmotrema stuppeum are included in the Red Data Book of Belarus and are presented for the first time for the Petrikovsky district. The indicator lichens of old-growth forests include 18 species. In all surveyed 10 localities, 31 species were noted.

scholarly journals Insects inhabiting two old-growth forest polypore species

2001 ◽  
Vol 12 (1) ◽  
pp. 3-14 ◽  
Author(s):  
Atte Komonen ◽  
Juha Siitonen ◽  
Marko Mutanen
Keyword(s):  
Forest Species ◽  
Insect Communities ◽  
Old Growth ◽  
Distribution Maps ◽  
Old Growth Forest ◽  
Old Growth Forests ◽  
Eastern Finland

This paper describes insect communities inhabiting two old-growth forest polypores Amylocystis lapponica and Fomitopsis rosea (Polyporaceae). Basidiocarps of both species were collected from old-growth forests in southern and eastern Finland and Russia. Samples of A. lapponica and F. rosea basidiocarps revealed insect communities of more than 50 species each, including many rare old-growth forest species. Here we report the rearing results and discuss the biology of the beetle Hallomenus sp. (Melandryidae) inhabiting A. lapponica and the beetle Cis dentatus (Cisidae), the moth Agnathosia mendicella (Tineidae) and the fly Elfia cingulata (Tachinidae) inhabiting F. rosea. Distribution maps of C. dentatus and A. mendicella in Finland are given.

Sign in / Sign up

Export Citation Format

Share Document