What level of native beetle diversity can be supported by forestry plantations? A global synthesis

2021 ◽  
Author(s):  
Pablo A. López‐Bedoya ◽  
Tibor Magura ◽  
Felicity A. Edwards ◽  
David P. Edwards ◽  
José M. Rey‐Benayas ◽  
...  
Keyword(s):  
Forestry Plantations

Design of stable drainage networks in upland forestry plantations

1993 ◽  
Vol 7 (3) ◽  
pp. 335-347 ◽  
Author(s):  
T. P. Flintham ◽  
P. A. Carling
Keyword(s):  
Drainage Networks ◽  
Forestry Plantations

scholarly journals Implikasi Perizinan Sektor Berbasis Lahan Terhadap Kondisi Kawasan Hutan Di Provinsi Riau

2019 ◽  
Vol 15 (1) ◽  
pp. 95
Author(s):  
Suprapto Suprapto ◽  
San Afri Awang ◽  
Ahmad Maryudi ◽  
Wahyu Wardhana
Keyword(s):  
Land Cover ◽  
Research Method ◽  
Sustainable Forest Management ◽  
Central Government ◽  
Descriptive Analysis ◽  
Forest Area ◽  
Land Cover Changes ◽  
Forest Plantations ◽  
Qualitative Descriptive ◽  
Forestry Plantations

Forest resources can be utilized through various activities in the land-based sector, including forestry, plantations, and mining. The implications of the issuance of various permits are indicated to cause changes in the area of forest and land cover. This paper aims to analyze and explain the implications of the various land-based sector licenses that have been issued by the local government and the central government on the condition of forest areas in Riau Province. The research method was carried out with qualitative descriptive analysis, through interviews, spatial analysis, and review and tracking documents. The results of the study showed that during the period 1986-2017 there had been a change in the area of forest area and land cover. The biggest changes in forest areas occur due to the conversion of forest areas into plantations, while the largest land cover changes in successive classes are land cover for plantations (Pk), forest plantations (Ht) and mining (Pn). Some of the recommendations that we propose are the temporary dismissal of licenses in the Riau forest area, the rearrangement of all licenses related to forest areas, increasing integrity and willingness of all parties in Riau and the central government in sustainable forest management.

Triazine herbicide contamination of Tasmanian streams: Sources, concentrations and effects on biota

1994 ◽  
Vol 45 (2) ◽  
pp. 209 ◽  
Author(s):  
PE Davies ◽  
LSJ Cook ◽  
JL Barton
Keyword(s):  
Surface Waters ◽  
Biological Effects ◽  
Invertebrate Drift ◽  
Triazine Herbicide ◽  
Short Term ◽  
Rainfall Events ◽  
Agricultural Catchments ◽  
Stream Communities ◽  
Forestry Industry ◽  
Forestry Plantations

Concentrations of the triazine herbicides atrazine, simazine, cyanazine, metribuzin and propazine were determined in streams draining forestry and agricultural catchments in Tasmania, Australia, between 1989 and 1992. Atrazine and simazine were used extensively by the forestry industry in a winter spraying programme, and applications of the other herbicides occurred in cropped agricultural catchments during spring and summer. Of 29 streams sampled intensively for triazines, 20 contained detectable residues. Median contaminations over all samples were 2.85, 1.05, <0.05, <0.05 and <0.05 �g L-1 for atrazine, simazine, cyanazine, metribuzin and propazine, respectively. All herbicide concentrations ranged over several orders of magnitude up to 53 mg L-1, with atrazine and simazine having significantly higher concentrations than the others. Atrazine concentrations were examined in streams draining forestry plantations for periods of up to two years. A decline in concentration was observed with time, but this was strongly influenced by rainfall events. Atrazine contamination from single spraying events persisted at a low level for up to 16 months. Contamination of Big Creek with atrazine to 22�g L-1 after aerial spraying led to an increase in stream invertebrate drift only on the day of spraying and to a short-term increase in movement of brown trout. On examination of biological effects of triazines in surface waters reported in the literature, it was concluded that the observed frequent contamination of Tasmanian streams with triazines may cause occasional minor short-term disturbance to stream communities.

Optimising capercailzie habitat in commercial forestry plantations

2004 ◽  
Vol 198 (1-3) ◽  
pp. 351-365 ◽  
Author(s):  
D.C MacMillan ◽  
K Marshall
Keyword(s):  
Forestry Plantations

Geneti|c diversity of superior Salix clones selected for intensive forestry plantations

1999 ◽  
Vol 16 (4) ◽  
pp. 249-255 ◽  
Author(s):  
F.A Aravanopoulos ◽  
K.H Kim ◽  
L Zsuffa
Keyword(s):  
Intensive Forestry ◽  
Forestry Plantations

scholarly journals Egg Deposition of Micromelalopha sieversi (Staudinger) on Clones of Populus from Section Aigeiros Induces Resistance in Neighboring Plants

Forests ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 110 ◽  
Author(s):  
Li Guo ◽  
Fu Liu ◽  
Sufang Zhang ◽  
Xiangbo Kong ◽  
Zhen Zhang
Keyword(s):  
Defense Mechanism ◽  
Northern China ◽  
Defense Responses ◽  
Resistance Mechanisms ◽  
Egg Laying ◽  
Pest Species ◽  
Major Pest ◽  
Set Up ◽  
And Control ◽  
Forestry Plantations

Research Highlights: We demonstrated that the resistance mechanisms of plants could be used to combat damage caused by pests in forestry plantations. Background and Objectives: Poplar is the main tree species used in plantations in northern China, with Micromelalopha sieversi (Staudinger) representing a major pest species causing defoliation. Here, we investigated whether two poplar clones could resist this pest species and the physiological mechanisms involved. Materials and Methods: Two clones of Populus from section Aigeiros were used, with ‘108’ (P. × euramericana ‘Guariento’) being more attractive to M. sieversi than ‘111’ (P. × euramericana ‘Bellotto’). Three treatments were set up (oviposited plants, neighboring plants, and control plants) to determine whether resistance was induced in plants neighboring oviposited plants. Results: Significantly fewer eggs were oviposited on neighboring plants compared to control plants for both clones, with more eggs being laid on oviposited and control plants of ‘108’ compared to ‘111’. β-Pinene was detected in oviposited and neighboring plants, but not control plants for either clone. Significantly higher concentrations of 3-carene was present in oviposited and neighboring plants of ‘108’ and ‘111’ compared to control plants at 24, 48, and 72 h after oviposition. Males, females, and mated females primarily responded to electroantennogram (EAG), methyl palmitate and 2-ethylhexyl acrylate at 50 ng/μL, and to 3-carene and β-pinene at 5 ng/μL, and to styrene at 10 ng/μL in EAG assays. When using these concentrations on plant leaves, 3-carene, β-pinene, and styrene significantly reduced the number of eggs laid on ‘108’, while 3-carene and β-pinene were effective for ‘111’. Conclusions: Plants neighboring oviposited plants exhibited defense responses; 3-carene and β-pinene were used to transmit chemical signals (volatile cues) from oviposited plants to neighboring plants; which induced neighboring plants released volatiles as a defense mechanism to prevent egg laying.

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