TY - JOUR T1 - Factors and scales potentially important for saproxylic beetles in temperate mixed oak forest JF - Biological Conservation Y1 - 2007 A1 - Franc, N. A1 - Gotmark, F. A1 - Okland, B. A1 - Norden, B. A1 - Paltto, H. SP - 86 EP - 98 AB - The influence of environmental factors on species richness and species composition may be manifested at different spatial levels. Exploring these relationships is important to understand at which spatial scales certain species and organism groups become sensitive to fragmentation and changes in habitat quality. At different spatial scales we evaluated the potential influence of 45 factors (multiple regression, PCA) on saproxylic oak beetles in 21 smaller broadleaved Swedish forests of conservation importance (woodland key habitats, WKH). Local amount of dead wood in forests is often assumed to be important, but two landscape variables, area of oak dominated woodland key habitats within 1 km of sites and regional amount of dead oak wood, were the main (and strong) predictors of variation in local species richness of oak beetles. The result was similar for red-listed beetles associated with oak. Species composition of the beetles was also best predicted by area of oak woodland key habitat within 1 km, with canopy closure as the second predictor. Despite suitable local quality of the woodland key habitats, the density of such habitat patches may in many areas be too low for long-term protection of saproxylic beetles associated with broadleaved temperate forests. Landscapes with many clustered woodland key habitats rich in oak should have high priority for conservation of saproxylic oak beetles. (c) 2006 Elsevier Ltd. All rights reserved. L2 - 26796 L3 - 27034 VL - 135 ER - TY - JOUR T1 - Mycetophilidae (Diptera), an insect group vulnerable to forestry practices? A comparison of clearcut, managed and semi-natural spruce forests in southern Norway JF - Biodiversity and Conservation Y1 - 1994 A1 - Okland, B. SP - 68 EP - 85, illustr. KW - MYCETOPHILIDAE-; FORESTRY-; Practices impact on species diversity; HABITAT-MANAGEMENT; SPECIES-DIVERSITY; Forestry practices impact; FOREST-AND-WOODLAND; NORWAY-; South KW - Ostmarka Forest; Forestry practices impact on species diversity; * insecta-; ** diptera-; *** nematocera-; **** mycetophilidae-; Invertebrates; Arthropods; Insects; Dipterans/True Flies L2 - 22700 L3 - 22717 VL - 3 UR - http://www.online-keys.net/sciaroidea/add01/Okland_1994_Mycetophilidae_forestry.pdf N1 - English ER - TY - JOUR T1 - Description of Syntemna haagvari, a new species of Mycetophilidae (Diptera) from Norway JF - FAUNA NORVEGICA SERIES B Y1 - 1995 A1 - Okland, B. SP - 59 EP - 62 KW - -fig; '; d; Invertebrates; Arthropods; Insects; Dipterans/True Flies KW - Gausdal KW - Ormetjernkampen; New species; * INSECTA-; ** DIPTERA-; *** NEMATOCERA-; **** MYCETOPHILIDAE-; Syntemna haagvari; SP-NOV; Norway; P.-59 KW - Syntemna haagvari; NORWAY-; Oppland L2 - 22701 L3 - 22718 VL - 42 UR - http://www.online-keys.net/sciaroidea/add01/Okland_1995_Syntemna_haagvari.pdf N1 - English ER - TY - JOUR T1 - Unlogged forests: important sites for preserving the diversity of mycetophilids (Diptera: Sciaroidea) JF - BIOLOGICAL CONSERVATION Y1 - 1996 A1 - Okland, B. SP - 297 EP - 310 KW - conservation implications; FOREST-AND-WOODLAND; Unlogged KW - Sciaroidea; CONSERVATION-; Species diversity ; &; abundance in unlogged forest significance; SPECIES-DIVERSITY; POPULATION-SIZE; Importance of unlogged forests KW - species diversity ; &; abundance; L2 - 22702 L3 - 22719 VL - 76 UR - http://www.online-keys.net/sciaroidea/1991_2000/Okland_1996_unlogged_forest.pdf N1 - English ER - TY - JOUR T1 - The genus Keroplatus Bosc, 1792 - an interesting addition to the Norwegian fauna (Diptera: Keroplatidae) JF - FAUNA NORVEGICA SERIES B Y1 - 1992 A1 - Okland, B. A1 - Soli, Geir E. E. SP - 85 EP - 88 KW - biology ; &; endangered status; * INSECTA-; ** DIPTERA-; *** NEMATOCERA-; **** KEROPLATIDAE-; Keroplatus dispar; **** KEROPLATIDAE-; Keroplatus tes KW - distribution KW - Keroplatus dispar; Keroplatus testaceus; ENDANGERED-STATUS; NORWAY-; First record for genus L2 - 22706 L3 - 45030 VL - 39 UR - http://www.online-keys.net/sciaroidea/1991_2000/Okland_&_Soli_1992_Keroplatus.pdf N1 - English ER - TY - JOUR T1 - Four new species of fungus gnats from Norway (Diptera, Mycetophilidae) JF - Studia Dipterologica Y1 - 1994 A1 - Zaitzev, Alexander I. A1 - Okland, B. SP - 181 EP - 186 L2 - 23322 L3 - 23339 VL - 1 CP - 2 N1 - English ER -