Influence of plantation site and wastewater sludge fertilization on the performance and foliar nutrient status of two willow species grown under SRIC in southern Quebec (Canada)

An increase (percentage dry weight) in both lignin and cellulose (with a greater proportion of cellulose than lignin being formed) is associated with a decrease in the concentration of phosphorus (and of other related elements) per unit dry weight in the leaves of sunlit overstorey species, of both sclerophyll and savannah communities in the mediterranean climate of southern Australia. Simultaneously, crude protein decreases. Leaves become increasingly sclerophyllous (with a higher Sclerophyll Index), with lower crude protein (cytoplasm) per unit dry weight; thicker leaves with lower leaf specific area result. The degree of sclerophylly per unit foliar phosphorus content is a little higher in understorey species which are partially shaded by the overstorey canopy.

Download Full-text

Foliar nutrient status and nutritional relationships of young Pinus radiata D. Don plantations in northwest Spain

Forest Ecology and Management ◽

10.1016/s0378-1127(02)00027-0 ◽

2003 ◽

Vol 174 (1-3) ◽

pp. 167-176 ◽

Cited By ~ 30

Author(s):

Rafael Zas ◽

Rafael Serrada

Keyword(s):

Pinus Radiata ◽

Nutrient Status ◽

Foliar Nutrient

Download Full-text

The influence of mountain alder on the growth, nutrition, and survival of black spruce and Sitka spruce in an afforested heathland near Mobile, Newfoundland

Canadian Journal of Forest Research ◽

10.1139/x93-097 ◽

1993 ◽

Vol 23 (4) ◽

pp. 743-748 ◽

Cited By ~ 5

Author(s):

André J. Hudson

Keyword(s):

Black Spruce ◽

Nutrient Status ◽

Sitka Spruce ◽

Nutrient Concentrations ◽

Litter Fall ◽

Humus Layer ◽

Foliar Nutrient ◽

Foliar Nutrient Concentrations ◽

Ecological Basis ◽

Alder Leaf Litter

The natural invasion of mountain alder (Alnuscrispa (Ait.) Pursh) into monoculture plantations of black spruce (Piceamariana (Mill.) B.S.P.) and Sitka spruce (Piceasitchensis (Bong.) Carr.) afforded an opportunity to assess the effects of mountain alder on soils, and on the growth, nutrient status, and survival of spruce in eastern Newfoundland. The plantations were established on ploughed Kalmia–Vaccinium heath in 1968–1969. Significant increases in the growth of spruce were associated with the presence of high densities of mountain alder in the two plantations studied. The increases began 3–6 years after the invasion and establishment of mountain alder. Estimated nitrogen (N) contributions to each plantation from mountain alder leaf litter fall were approximately 50 kg•ha−1•year−1. Spruce foliage N content was 10–15% higher in high-density mountain alder (HD-alder) plots than in low-density mountain alder (LD-alder) plots, but other foliar nutrient concentrations were low and possibly deficient in the HD-alder plots. Development of a litter fall–humus layer was observed in HD-alder plots but not in LD-alder plots; however, B-horizon soil-N values did not differ significantly between HD-alder and LD-alder plots. The mountain alder invasion did not reduce the densities (stems/ha) of spruce. Additional studies on the autecology of Alnus spp. native to Newfoundland, and on alder-spruce interaction are recommended to further the development of an adequate ecological basis for heathland and peatland afforestation in the region.

Download Full-text

Foliar deficiencies of sugar maple stands associated with soil cation imbalances in the Quebec Appalachians

Canadian Journal of Soil Science ◽

10.4141/cjss95-024 ◽

1995 ◽

Vol 75 (2) ◽

pp. 169-175 ◽

Cited By ~ 48

Author(s):

Rock Ouimet ◽

Claude Camiré

Keyword(s):

Soil Properties ◽

Acer Saccharum ◽

Sugar Maple ◽

Nutrient Status ◽

Nutrient Stress ◽

Exchangeable Cations ◽

Integrated System ◽

Ca Deficiency ◽

Exchangeable Ca ◽

Foliar Nutrient

Widespread symptoms of foliar deficiency of P and K have been observed for almost a decade in most of the declining hardwood forest in the Quebec Appalachians. We hypothesized that the foliar nutrient disturbances were related to the chemical equilibrium of exchangeable soil cations. Mature sugar maple (Acer saccharum Marsh.) foliage, and soil H-Ah and B horizon from 246 hardwood stands located in the Quebec Appalachians were sampled and analyzed. A cluster analysis using the Diagnosis and Recommendation Integrated System (DRIS) indices of the foliar data permitted the identification of six different nutritional groups: one slightly and one strongly deficient group in P-K, three groups having a K-Ca deficiency at different intensities from weak to strong, and one group having a strong P-K-Ca deficiency. These foliar nutrient status were strongly related to some soil properties. The P-K deficient groups had a 30% lower K saturation in the H-Ah horizon than the average level of the other groups, but a higher proportion of exchangeable Ca in the H-Ah and B horizon. For the four groups that were K-Ca deficient, increased nutrient stress was associated with reductions in soil Ca saturation and pH, and, particularly, increases in soil Mg saturation. Also, the Ca/(H+Al) ratio of exchangeable cations in the B horizon was ≤ 0.6 for these groups. High soil Mg saturation, potential soil Al toxicity related to low Ca saturation, and unfavorable soil humus properties were associated with the severity of nutrient stress. To obtain a balanced nutrition for sugar maple in this region, the forest humus should have less than 10% of Mg on exchange sites, a Ca/Mg ratio of exchangeable cations > 6, and a K/Mg ratio > 0.5. The values in the mineral B horizon should be < 10% for Mg/CEC, > 4 for the Ca/Mg ratio, > 1 for the K/Mg ratio, and > 1 for the Ca/(H+Al) ratio. Key words:Acer saccharum, cation saturation, Diagnosis and Recommendation Integrated System, forest decline, nutrient status, soil properties

Download Full-text

Seasonal growth and foliar nutrients of Larix laricina in three wetland ecosystems

Canadian Journal of Botany ◽

10.1139/b77-150 ◽

1977 ◽

Vol 55 (10) ◽

pp. 1291-1298 ◽

Cited By ~ 28

Author(s):

Donald L. Tilton

Keyword(s):

Nutrient Status ◽

Shoot Elongation ◽

Nutrient Concentrations ◽

Larix Laricina ◽

Wetland Ecosystems ◽

Site Variation ◽

Foliar Nutrient ◽

Ash Weight ◽

Conifer Swamp ◽

Study Sites

Levels of N, P, Ca, Mg, K, Al, Fe, Zn, Mn, and B were determined in foliage from tamarack (Larix laricina (DuRoi) K. Koch) in a bog, conifer swamp, and fen from budbreak to leaf abscission. Elongation of needles and lateral shoots as well as dry and ash weight of needles were determined. Expansion of needles and shoots ceased at similar dates for all sites, but trees in the fen had significantly longer needles and lateral shoots.On August 13, foliar concentrations of N, Ca,and Mg were higher in the fen than in the conifer swamp or bog, while concentrations of Al, Fe, Zn, Mn, and B were higher in the bog than the other two sites. Phosphorus concentrations in foliage were similar on this date in the fen and conifer swamp but were lower in the bog site. Despite significant between-site variation for certain foliar elements, two patterns of seasonal variation in nutrient concentrations were discerned. Significant between-site differences in the amounts and rates of needle and shoot elongation, foliar nutrient concentrations at a single sampling time, and patterns of certain foliar elements were associated with variations in nutrient status and moisture–aeration conditions of the study sites.

Download Full-text

Linking water sources with foliar nutrient status in upland plant communities in the Everglades National Park, USA

Ecohydrology ◽

10.1002/eco.38 ◽

2009 ◽

Vol 2 (1) ◽

pp. 42-54 ◽

Cited By ~ 36

Author(s):

Amartya K. Saha ◽

Leonel da Silviera Lobo O'Reilly Sternberg ◽

Fernando Miralles-Wilhelm

Keyword(s):

Plant Communities ◽

National Park ◽

Nutrient Status ◽

Water Sources ◽

Everglades National Park ◽

Foliar Nutrient

Download Full-text

A comparison of the foliar nutrient status of elfinwood and symmetrically formed tall trees, Colorado Front Range, U.S.A.

Canadian Journal of Botany ◽

10.1139/b96-176 ◽

1996 ◽

Vol 74 (9) ◽

pp. 1461-1475 ◽

Cited By ~ 11

Author(s):

Kenneth A. Barrick ◽

Anna W. Schoettle

Keyword(s):

Nutrient Status ◽

Colorado Front Range ◽

Picea Engelmannii ◽

Nutrient Concentrations ◽

Abies Lasiocarpa ◽

Front Range ◽

Pinus Flexilis ◽

Foliar Nutrient ◽

Foliar Nutrient Concentrations ◽

Pinus Aristata

We tested the hypothesis of nutrient limitation in the trees of the alpine forest – tundra ecotone by comparing the foliar nutrient status of windsculpted elfinwood (also called krummholz) growing at the upper limit of tree success with symmetrically formed toll trees growing at the nearby timberline. The species investigated included Picea engelmannii (Parry) Engelmann, Abies lasiocarpa (Hooker) Nuttall, pinus flexilis james, and Pinus aristata Bailey. The foliar nutrient concentrations of the ecotone trees were similar to other healthy montane forests. Most of the significant differences in mean foliar nutrient concentrations between elfinwood and tall trees indicate lower concentrations in elfinwood trees. We found significantly lower mean phosphorus concentrations in Picea engelmannii and Abies lasiocarpa elfinwood compared with tall trees, but the mean nitrogen–phosphorus ratios were within the normal range. The foliar nutrient status of Pinus aristata elfinwood was similar to tall trees, while Pinus flexilis had considerably more significant differences in nutrient concentrations between the tree forms. Although there are many theoretical processes that could cause nutrient deficiencies at treeline, this study suggests that the elfinwood along the Colorado Front Range is not currently nutrient deficient. We discuss the potential differences in nutrient ecology between elfinwood and tall trees. Keywords: foliar nutrients, alpine ecotone, treeline, elfinwood, krummholz, conifer.

Download Full-text