Lichen Conservation in Heavily Managed Boreal Forests

McMullin, Richard Troy; Thompson, Ian D.; Newmaster, Steven G.

doi:10.1111/cobi.12094

Cited by 19 publications

(15 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While additional species may occur in inconspicuous and less accessible microhabitats, the striking absence of bryophytes and lichens from their typical substrates confirms that their current diversity and abundance are extremely low. These organisms are known to be sensitive to changes in environmental chemistry, moisture, and light (e.g., McMullin 2010McMullin , 2013Vanderpoorten and Goffinet 2009). The forest-canopy reduction from 90% to 46% as a result of tree mortality due to the Cormorants (Hebert et al 2014) has likely caused substantial changes to the moisture and light regimes in all the forest microhabitats.…”

Section: Discussionmentioning

confidence: 99%

Status of Lichens and Bryophytes on Middle Island: Declining Carolinian Habitat at Canada's Southernmost Point

Doubt

McMullin

2016

Northeastern Naturalist

Self Cite

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Status of Lichens and Bryophytes on Middle Island: Declining Carolinian Habitat at Canada's Southernmost Point

Doubt

McMullin

2016

Northeastern Naturalist

Self Cite

View full text Add to dashboard Cite

“…B.S.P.) forests are an important resource for North Americans from economic, social, environmental, and cultural perspectives (e.g., Viereck & Johnston, ; McMullin et al ., ). Based on the spatial products of Beaudoin et al .…”

Section: Introductionmentioning

confidence: 99%

“…B.S.P.) forests are an important resource for North Americans from economic, social, environmental, and cultural perspectives (e.g., Viereck & Johnston, 1990;McMullin et al, 2013). Based on the spatial products of Beaudoin et al (2014), black spruce occupies 365 Mha of vegetated lands in Canada, upon which is based a large portion of Canada's forest industries (Luckai et al, 2012;Beaudoin et al, 2014;Guindon et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Negative impacts of high temperatures on growth of black spruce forests intensify with the anticipated climate warming

Girardin

Hogg

Bernier

et al. 2015

Global Change Biology

162

126

View full text Add to dashboard Cite

An increasing number of studies conclude that water limitations and heat stress may hinder the capacity of black spruce (Picea mariana (Mill.) B.S.P.) trees, a dominant species of Canada's boreal forests, to grow and assimilate atmospheric carbon. However, there is currently no scientific consensus on the future of these forests over the next century in the context of widespread climate warming. The large spatial extent of black spruce forests across the Canadian boreal forest and associated variability in climate, demography, and site conditions pose challenges for projecting future climate change responses. Here we provide an evaluation of the impacts of climate warming and drying, as well as increasing [CO2 ], on the aboveground productivity of black spruce forests across Canada south of 60°N for the period 1971 to 2100. We use a new extensive network of tree-ring data obtained from Canada's National Forest Inventory, spatially explicit simulations of net primary productivity (NPP) and its drivers, and multivariate statistical modeling. We found that soil water availability is a significant driver of black spruce interannual variability in productivity across broad areas of the western to eastern Canadian boreal forest. Interannual variability in productivity was also found to be driven by autotrophic respiration in the warmest regions. In most regions, the impacts of soil water availability and respiration on interannual variability in productivity occurred during the phase of carbohydrate accumulation the year preceding tree-ring formation. Results from projections suggest an increase in the importance of soil water availability and respiration as limiting factors on NPP over the next century due to warming, but this response may vary to the extent that other factors such as carbon dioxide fertilization, and respiration acclimation to high temperature, contribute to dampening these limitations.

show abstract

“…The three species examined occurred on average 12.12 m from the edge of the harvest. Lichens that are sensitive to disturbance are those that have narrow microhabitat requirements (Lesica et al 1991, McMullin et al 2013. Lobaria pulmonaria was the most tolerant to edge effects that we assessed.…”

Section: Discussionmentioning

confidence: 99%

“…The amount of available light and moisture are important for lichen colonization (Bartak et al 2006, Gauslaa et al 2009, McMullin et al 2013. Higher moisture levels are typically preferred by foliose lichens (Gauslaa et al 2009).…”

Section: Discussionmentioning

confidence: 99%

Edge effects on the lichen genus Lobaria in Atlantic Canadian Forests

BarryMelanie

McMullin

HornAndrew

2015

The Forestry Chronicle

Self Cite

View full text Add to dashboard Cite

Clear-cut or mosaic forestry practices are known to reduce biodiversity in harvested areas, but the biodiversity in the remaining adjacent forests is also affected. Interior parts of the forest that become edge have increased light, wind, and temperature, and a decrease in moisture. Species with a narrow range of tolerance to environmental change are most affected. To better understand this 'edge effect' in the Acadian Forest, 20 mature deciduous stands in northeastern New Brunswick were examined that were adjacent to clear-cuts ranging from 6-11 years old. We used lichens as our bioindicators and selected the genus Lobaria because it is particularly sensitive to disturbance, but also common in mature deciduous forests of this region. Three Lobaria species that are known to occur in the Acadian Forest were examined: L. pulmonaria, L. quercizans, and L. scrobiculata. Canopy closure, temperature, and presence data were recorded at the forest edge and at the first occurrence of any of these three species along a transect running directly into the forest (three transects at each stand, 60 total). Our results show that the species selected have a negative response to newly created forest edges. Lobaria pulmonaria was the most tolerant to edge effects followed by L. quercizan and L. scrobiculata. The mean occurrence distance from the forest edge for all three species was 12.12 m (± 5.66). Forest managers can use these findings to better understand the impacts of clear-cutting on the biodiversity that inhabits the edges created in the residual forests.Key words: Conservation, sustainable forest management, Acadian Forest, edge effects, fragmentation, biodiversity RÉSUMÉ C' est un fait reconnu que les pratiques forestières comme la coupe à blanc ou de la coupe en mosaïque réduisent la biodiversité dans les zones exploitées, mais aussi dans les étendues boisées adjacentes. Les zones situées à l'intérieur de la forêt qui deviennent les bordures subissent une augmentation de la luminosité, de la vitesse du vent et de la température, ainsi qu'une diminution de l'humidité. Les espèces qui n' ont qu'une faible tolérance aux perturbations environnementales en sont les plus affectées. Afin de mieux comprendre « l' effet de bordure » dans la forêt acadienne, nous avons étudié 20 peuplements feuillus à maturité du nord-est du Nouveau-Brunswick adjacents à des coupes à blanc datant de 6 à 11 ans. Nous avons choisi d'utiliser les lichens comme bio-indicateurs et particulièrement ceux du genre Lobaria qui s'avère être particulièrement sensible aux perturbations, mais aussi bien adapté aux forêts feuillues matures de la région. L' étude a porté sur trois espèces de Lobaria qui se retrouvent dans la forêt acadienne : L. pulmonaria, L. quercizans et L. scrobiculata. Les observations portaient sur la fermeture du couvert, la température et la présence de ces espèces en bordure de la forêt, ainsi que la première occurrence de n'importe laquelle de ces trois espèces le long d'un transect entrant directement dans la forêt (trois tr...

show abstract

Lichen Conservation in Heavily Managed Boreal Forests

Cited by 19 publications

References 45 publications

Status of Lichens and Bryophytes on Middle Island: Declining Carolinian Habitat at Canada's Southernmost Point

Status of Lichens and Bryophytes on Middle Island: Declining Carolinian Habitat at Canada's Southernmost Point

Negative impacts of high temperatures on growth of black spruce forests intensify with the anticipated climate warming

Edge effects on the lichen genus Lobaria in Atlantic Canadian Forests

Contact Info

Product

Resources

About