Ken Krauss, Ph.D. (Former Employee)
Science and Products
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Wind damage and salinity effects of Hurricanes Katrina and Rita on coastal baldcypress forests of Louisiana Wind damage and salinity effects of Hurricanes Katrina and Rita on coastal baldcypress forests of Louisiana
The frequency of hurricane landfall in a given coastal stretch may play a more important role in the ecology of coastal forests than previously thought because of direct and indirect impacts of fallen trees and the introduction of salt water that lingers long after the storm passes. Findings show that surge events can inundate interior freshwater forests many miles from the coast and...
Authors
Thomas W. Doyle, William H. Conner, Richard H. Day, Ken W. Krauss, Christopher M. Swarzenski
Effects of season, rainfall, and hydrogeomorphic setting on mangrove tree growth in Micronesia Effects of season, rainfall, and hydrogeomorphic setting on mangrove tree growth in Micronesia
Seasonal patterns of tree growth are often related to rainfall, temperature, and relative moisture regimes. We asked whether diameter growth of mangrove trees in Micronesia, where seasonal changes are minimal, is continuous throughout a year or conforms to an annual cycle. We installed dendrometer bands on Sonneratia alba and Bruguiera gymnorrhiza trees growing naturally within mangrove...
Authors
K. W. Krauss, B. D. Keeland, J. A. Allen, K. C. Ewel, Daniel J. Johnson
Leaf gas exchange characteristics of three neotropical mangrove species in response to varying hydroperiod Leaf gas exchange characteristics of three neotropical mangrove species in response to varying hydroperiod
We determined how different hydroperiods affected leaf gas exchange characteristics of greenhouse-grown seedlings (2002) and saplings (2003) of the mangrove species Avicennia germinans (L.) Stearn., Laguncularia racemosa (L.) Gaertn. f., and Rhizophora mangle L. Hydroperiod treatments included no flooding (unflooded), intermittent flooding (intermittent), and permanent flooding (flooded)...
Authors
Ken W. Krauss, Robert R. Twilley, Thomas W. Doyle, Emile S. Gardiner
Influence of propagule flotation longevity and light availability on establishment of introduced mangrove species in Hawai'i Influence of propagule flotation longevity and light availability on establishment of introduced mangrove species in Hawai'i
Although no mangrove species are native to the Hawaiian Archipelago, both Rbizopbora mangle and Bruguiera sexangula were introduced and have become naturalized. Rbizopbora mangle has spread to almost every major Hawaiian island, but B. sexangula has established only on O'ahu, where it was intentionally introduced. To examine the possibility that differences in propagule characteristics...
Authors
J. A. Allen, K. W. Krauss
Evaluating the relative contributions of hydroperiod and soil fertility on growth of south Florida mangroves Evaluating the relative contributions of hydroperiod and soil fertility on growth of south Florida mangroves
Low and high water periods create contrasting challenges for trees inhabiting periodically flooded wetlands. Low to moderate flood durations and frequencies may bring nutrient subsidies, while greater hydroperiods can be energetically stressful because of oxygen deficiency. We tested the hypothesis that hydroperiod affects the growth of mangrove seedlings and saplings in a greenhouse...
Authors
K. W. Krauss, T.W. Doyle, R.R. Twilley, V. H. Rivera-Monroy, J.K. Sullivan
Responses of neotropical mangrove seedlings grown in monoculture and mixed culture under treatments of hydroperiod and salinity Responses of neotropical mangrove seedlings grown in monoculture and mixed culture under treatments of hydroperiod and salinity
We investigated the combined effects of salinity and hydroperiod on seedlings of Rhizophora mangle and Laguncularia racemosa grown under experimental conditions of monoculture and mixed culture by using a simulated tidal system. The objective was to test hypotheses relative to species interactions to either tidal or permanent flooding at salinities of 10 or 40 g/l. Four-month-old...
Authors
P. Cardona-Olarte, R.R. Twilley, K. W. Krauss, V. Rivera-Monroy
Woody debris in the mangrove forests of South Florida Woody debris in the mangrove forests of South Florida
Woody debris is abundant in hurricane‐impacted forests. With a major hurricane affecting South Florida mangroves approximately every 20 yr, carbon storage and nutrient retention may be influenced greatly by woody debris dynamics. In addition, woody debris can influence seedling regeneration in mangrove swamps by trapping propagules and enhancing seedling growth potential. Here, we report...
Authors
K. W. Krauss, T.W. Doyle, R.R. Twilley, T. J. Smith, K.R.T. Whelan, J.K. Sullivan
A tropical freshwater wetlands: I. Structure, growth, and regeneration A tropical freshwater wetlands: I. Structure, growth, and regeneration
Forested wetlands dominated by Terminalia carolinensis are endemic to Micronesia but common only on the island of Kosrae, Federated States of Micronesia. On Kosrae, these forests occur on Nansepsep, Inkosr, and Sonahnpil soil types, which differ in degree of flooding and soil saturation. We compared forest structure, growth, nutrition, and regeneration on two sites each on Nansepsep and...
Authors
James P. Allen, Ken W. Krauss, Katherine C. Ewel, Bobby D. Keeland, E. E. Waguk
Factors influencing the regeneration of the mangrove Bruguiera gymnorrhiza (L.) Lamk. on a tropical Pacific island Factors influencing the regeneration of the mangrove Bruguiera gymnorrhiza (L.) Lamk. on a tropical Pacific island
Mangrove swamps occupy approximately two-thirds of the shoreline on Kosrae, Federated States of Micronesia (FSM), and also border the island's most populated areas. Kosraeans depend on mangrove swamps for a supply of wood to support a growing handicraft industry, for a dependable source of fuelwood, and for habitat to support the harvest of fish and mangrove crabs. One of the more...
Authors
K. W. Krauss, J. A. Allen
Differential rates of vertical accretion and elevation change among aerial root types in Micronesian mangrove forests Differential rates of vertical accretion and elevation change among aerial root types in Micronesian mangrove forests
Root systems in mangrove swamps have captured the attention of scientists for decades. Among the postulated roles of root structures include a contribution to the geomorphological stability of mangrove soils through sediment trapping and binding. In this study, we used feldspar marker horizons and sediment pins to investigate the influence of three different functional root types - prop...
Authors
K. W. Krauss, J. A. Allen, Donald R. Cahoon
Influences of salinity and shade on seedling photosynthesis and growth of two mangrove species, Rhizophora mangle and Bruguiera sexangula, introduced to Hawaii Influences of salinity and shade on seedling photosynthesis and growth of two mangrove species, Rhizophora mangle and Bruguiera sexangula, introduced to Hawaii
Rhizophora mangle was first introduced to Hawaii in 1902 to promote shoreline stabilization. Intertidal competition with native and introduced salt marsh species was low, and beyond the early 1920s, mangrove forests expanded rapidly. An additional mangrove species, Bruguiera sexangula, was introduced in 1922 and currently co-occurs with R. mangle in only a few stands on the north shore...
Authors
K. W. Krauss, J. A. Allen
Factors limiting the intertidal distribution of the mangrove species Xylocarpus granatum Factors limiting the intertidal distribution of the mangrove species Xylocarpus granatum
The tree species Xylocarpus granatum is commonly described as occurring in the upper intertidal zone of mangrove forests, but mature trees are occasionally found at lower elevations. In the Utwe River basin, on the Pacific island of Kosrae, we investigated the relative importance of several biotic and abiotic factors that may control the intertidal distribution of X. granatum. Factors we...
Authors
J. A. Allen, K. W. Krauss, R.D. Hauff
Non-USGS Publications**
Kumara, M.P., L.P. Jayatissa, K.W. Krauss, D.H. Phillips, & M. Huxham. 2010. High mangrove density enhances surface accretion, surface elevation change, and tree survival in coastal areas susceptible to sea-level rise. Oecologia 164: 545-553.
Huxham, M., M. Kumara, L. Jayatissa, K.W. Krauss, J. Kairo, J. Langat, M. Mencuccini, M. Skov & B. Kirui. 2010. Intra and inter-specific facilitation in mangroves may increase resilience to climate change threats. Philosophical Transactions of the Royal Society of London B 365: 2127-2135.
Krauss, K.W. 2009. Mangrove energetics. Ecology 90: 3588-3589. [book review]
Krauss, K.W., C.E. Lovelock, K.L. McKee, L. López-Hoffman, S.M.L. Ewe & W.P. Sousa. 2008. Environmental drivers in mangrove establishment and early development: a review. Aquatic Botany 89: 105-127.
Conner, W.H., T.W. Doyle & K.W. Krauss, Eds., 2007. Ecology of Tidal Freshwater Forested Wetlands of the Southeastern United States. Springer. 505 p.
Krauss, K.W., J.L. Chambers & D. Creech. 2007. Selection for salt tolerance in tidal freshwater swamp species: advances using baldcypress as a model for restoration. Pages 385-410 in W.H. Conner, T.W. Doyle, K.W. Krauss (eds.), Ecology of Tidal Freshwater Forested Wetlands of the Southeastern United States. Springer. 505 p.
Conner W.H., K.W. Krauss & T.W. Doyle. 2007. Ecology of tidal freshwater forests in coastal deltaic Louisiana and northeastern South Carolina. Pages 223-253 in W.H. Conner, T.W. Doyle, K.W. Krauss (eds.), Ecology of Tidal Freshwater Forested Wetlands of the Southeastern United States. Springer. 505 p.
Conner, W.H., C.T. Hackney, K.W. Krauss & J.W. Day, Jr. 2007. Tidal freshwater forested wetlands: future research needs and an overview of restoration. Pages 461-485 in W.H. Conner, T.W. Doyle, K.W. Krauss (eds.), Ecology of Tidal Freshwater Forested Wetlands of the Southeastern United States. Springer. 505 p.
Gardiner, E.S. & K.W. Krauss. 2001. Photosynthetic light response of flooded cherrybark oak (Quercus pagoda) seedlings grown in two light regimes. Tree Physiology 21: 1103-1111.
Krauss, K.W., R.A. Goyer, J.A. Allen & J.L. Chambers. 2000. Tree shelters effective in coastal swamp restoration (Louisiana). Ecological Restoration18: 200-201.
Allen, J.A., K.W. Krauss, N.C. Duke, O. Björkman, D.R. Herbst & C. Shih. 2000. Bruguiera species in Hawai’i: systematic considerations and ecological implications. Pacific Science 54: 331-343.
Doyle, T.W. & K.W. Krauss. 1999. The sands and sambars of St. Vincent Island. Florida Wildlife 53: 22-25.
Krauss, K.W., J.L. Chambers & J.A. Allen. 1998. Salinity effects and differential germination of several half-sib families of baldcypress from different seed sources. New Forests 15: 53-68.
Allen, J.A., W.H. Conner, R.A. Goyer, J.L. Chambers & K.W. Krauss. 1998. Chapter 4: Freshwater forested wetlands and global climate change. Pages 33-44 in G.R. Guntenspergen and B.A Vairin (eds.), Vulnerability of coastal wetlands in the Southeastern United States: climate change research results, 1992-97. U.S. Geological Survey, Biological Resources Division Biological Science Report USGS/BRD/BSR-1998-0002. 101 p.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 19
Filter Total Items: 37
No Result Found
Filter Total Items: 195
Wind damage and salinity effects of Hurricanes Katrina and Rita on coastal baldcypress forests of Louisiana Wind damage and salinity effects of Hurricanes Katrina and Rita on coastal baldcypress forests of Louisiana
The frequency of hurricane landfall in a given coastal stretch may play a more important role in the ecology of coastal forests than previously thought because of direct and indirect impacts of fallen trees and the introduction of salt water that lingers long after the storm passes. Findings show that surge events can inundate interior freshwater forests many miles from the coast and...
Authors
Thomas W. Doyle, William H. Conner, Richard H. Day, Ken W. Krauss, Christopher M. Swarzenski
Effects of season, rainfall, and hydrogeomorphic setting on mangrove tree growth in Micronesia Effects of season, rainfall, and hydrogeomorphic setting on mangrove tree growth in Micronesia
Seasonal patterns of tree growth are often related to rainfall, temperature, and relative moisture regimes. We asked whether diameter growth of mangrove trees in Micronesia, where seasonal changes are minimal, is continuous throughout a year or conforms to an annual cycle. We installed dendrometer bands on Sonneratia alba and Bruguiera gymnorrhiza trees growing naturally within mangrove...
Authors
K. W. Krauss, B. D. Keeland, J. A. Allen, K. C. Ewel, Daniel J. Johnson
Leaf gas exchange characteristics of three neotropical mangrove species in response to varying hydroperiod Leaf gas exchange characteristics of three neotropical mangrove species in response to varying hydroperiod
We determined how different hydroperiods affected leaf gas exchange characteristics of greenhouse-grown seedlings (2002) and saplings (2003) of the mangrove species Avicennia germinans (L.) Stearn., Laguncularia racemosa (L.) Gaertn. f., and Rhizophora mangle L. Hydroperiod treatments included no flooding (unflooded), intermittent flooding (intermittent), and permanent flooding (flooded)...
Authors
Ken W. Krauss, Robert R. Twilley, Thomas W. Doyle, Emile S. Gardiner
Influence of propagule flotation longevity and light availability on establishment of introduced mangrove species in Hawai'i Influence of propagule flotation longevity and light availability on establishment of introduced mangrove species in Hawai'i
Although no mangrove species are native to the Hawaiian Archipelago, both Rbizopbora mangle and Bruguiera sexangula were introduced and have become naturalized. Rbizopbora mangle has spread to almost every major Hawaiian island, but B. sexangula has established only on O'ahu, where it was intentionally introduced. To examine the possibility that differences in propagule characteristics...
Authors
J. A. Allen, K. W. Krauss
Evaluating the relative contributions of hydroperiod and soil fertility on growth of south Florida mangroves Evaluating the relative contributions of hydroperiod and soil fertility on growth of south Florida mangroves
Low and high water periods create contrasting challenges for trees inhabiting periodically flooded wetlands. Low to moderate flood durations and frequencies may bring nutrient subsidies, while greater hydroperiods can be energetically stressful because of oxygen deficiency. We tested the hypothesis that hydroperiod affects the growth of mangrove seedlings and saplings in a greenhouse...
Authors
K. W. Krauss, T.W. Doyle, R.R. Twilley, V. H. Rivera-Monroy, J.K. Sullivan
Responses of neotropical mangrove seedlings grown in monoculture and mixed culture under treatments of hydroperiod and salinity Responses of neotropical mangrove seedlings grown in monoculture and mixed culture under treatments of hydroperiod and salinity
We investigated the combined effects of salinity and hydroperiod on seedlings of Rhizophora mangle and Laguncularia racemosa grown under experimental conditions of monoculture and mixed culture by using a simulated tidal system. The objective was to test hypotheses relative to species interactions to either tidal or permanent flooding at salinities of 10 or 40 g/l. Four-month-old...
Authors
P. Cardona-Olarte, R.R. Twilley, K. W. Krauss, V. Rivera-Monroy
Woody debris in the mangrove forests of South Florida Woody debris in the mangrove forests of South Florida
Woody debris is abundant in hurricane‐impacted forests. With a major hurricane affecting South Florida mangroves approximately every 20 yr, carbon storage and nutrient retention may be influenced greatly by woody debris dynamics. In addition, woody debris can influence seedling regeneration in mangrove swamps by trapping propagules and enhancing seedling growth potential. Here, we report...
Authors
K. W. Krauss, T.W. Doyle, R.R. Twilley, T. J. Smith, K.R.T. Whelan, J.K. Sullivan
A tropical freshwater wetlands: I. Structure, growth, and regeneration A tropical freshwater wetlands: I. Structure, growth, and regeneration
Forested wetlands dominated by Terminalia carolinensis are endemic to Micronesia but common only on the island of Kosrae, Federated States of Micronesia. On Kosrae, these forests occur on Nansepsep, Inkosr, and Sonahnpil soil types, which differ in degree of flooding and soil saturation. We compared forest structure, growth, nutrition, and regeneration on two sites each on Nansepsep and...
Authors
James P. Allen, Ken W. Krauss, Katherine C. Ewel, Bobby D. Keeland, E. E. Waguk
Factors influencing the regeneration of the mangrove Bruguiera gymnorrhiza (L.) Lamk. on a tropical Pacific island Factors influencing the regeneration of the mangrove Bruguiera gymnorrhiza (L.) Lamk. on a tropical Pacific island
Mangrove swamps occupy approximately two-thirds of the shoreline on Kosrae, Federated States of Micronesia (FSM), and also border the island's most populated areas. Kosraeans depend on mangrove swamps for a supply of wood to support a growing handicraft industry, for a dependable source of fuelwood, and for habitat to support the harvest of fish and mangrove crabs. One of the more...
Authors
K. W. Krauss, J. A. Allen
Differential rates of vertical accretion and elevation change among aerial root types in Micronesian mangrove forests Differential rates of vertical accretion and elevation change among aerial root types in Micronesian mangrove forests
Root systems in mangrove swamps have captured the attention of scientists for decades. Among the postulated roles of root structures include a contribution to the geomorphological stability of mangrove soils through sediment trapping and binding. In this study, we used feldspar marker horizons and sediment pins to investigate the influence of three different functional root types - prop...
Authors
K. W. Krauss, J. A. Allen, Donald R. Cahoon
Influences of salinity and shade on seedling photosynthesis and growth of two mangrove species, Rhizophora mangle and Bruguiera sexangula, introduced to Hawaii Influences of salinity and shade on seedling photosynthesis and growth of two mangrove species, Rhizophora mangle and Bruguiera sexangula, introduced to Hawaii
Rhizophora mangle was first introduced to Hawaii in 1902 to promote shoreline stabilization. Intertidal competition with native and introduced salt marsh species was low, and beyond the early 1920s, mangrove forests expanded rapidly. An additional mangrove species, Bruguiera sexangula, was introduced in 1922 and currently co-occurs with R. mangle in only a few stands on the north shore...
Authors
K. W. Krauss, J. A. Allen
Factors limiting the intertidal distribution of the mangrove species Xylocarpus granatum Factors limiting the intertidal distribution of the mangrove species Xylocarpus granatum
The tree species Xylocarpus granatum is commonly described as occurring in the upper intertidal zone of mangrove forests, but mature trees are occasionally found at lower elevations. In the Utwe River basin, on the Pacific island of Kosrae, we investigated the relative importance of several biotic and abiotic factors that may control the intertidal distribution of X. granatum. Factors we...
Authors
J. A. Allen, K. W. Krauss, R.D. Hauff
Non-USGS Publications**
Kumara, M.P., L.P. Jayatissa, K.W. Krauss, D.H. Phillips, & M. Huxham. 2010. High mangrove density enhances surface accretion, surface elevation change, and tree survival in coastal areas susceptible to sea-level rise. Oecologia 164: 545-553.
Huxham, M., M. Kumara, L. Jayatissa, K.W. Krauss, J. Kairo, J. Langat, M. Mencuccini, M. Skov & B. Kirui. 2010. Intra and inter-specific facilitation in mangroves may increase resilience to climate change threats. Philosophical Transactions of the Royal Society of London B 365: 2127-2135.
Krauss, K.W. 2009. Mangrove energetics. Ecology 90: 3588-3589. [book review]
Krauss, K.W., C.E. Lovelock, K.L. McKee, L. López-Hoffman, S.M.L. Ewe & W.P. Sousa. 2008. Environmental drivers in mangrove establishment and early development: a review. Aquatic Botany 89: 105-127.
Conner, W.H., T.W. Doyle & K.W. Krauss, Eds., 2007. Ecology of Tidal Freshwater Forested Wetlands of the Southeastern United States. Springer. 505 p.
Krauss, K.W., J.L. Chambers & D. Creech. 2007. Selection for salt tolerance in tidal freshwater swamp species: advances using baldcypress as a model for restoration. Pages 385-410 in W.H. Conner, T.W. Doyle, K.W. Krauss (eds.), Ecology of Tidal Freshwater Forested Wetlands of the Southeastern United States. Springer. 505 p.
Conner W.H., K.W. Krauss & T.W. Doyle. 2007. Ecology of tidal freshwater forests in coastal deltaic Louisiana and northeastern South Carolina. Pages 223-253 in W.H. Conner, T.W. Doyle, K.W. Krauss (eds.), Ecology of Tidal Freshwater Forested Wetlands of the Southeastern United States. Springer. 505 p.
Conner, W.H., C.T. Hackney, K.W. Krauss & J.W. Day, Jr. 2007. Tidal freshwater forested wetlands: future research needs and an overview of restoration. Pages 461-485 in W.H. Conner, T.W. Doyle, K.W. Krauss (eds.), Ecology of Tidal Freshwater Forested Wetlands of the Southeastern United States. Springer. 505 p.
Gardiner, E.S. & K.W. Krauss. 2001. Photosynthetic light response of flooded cherrybark oak (Quercus pagoda) seedlings grown in two light regimes. Tree Physiology 21: 1103-1111.
Krauss, K.W., R.A. Goyer, J.A. Allen & J.L. Chambers. 2000. Tree shelters effective in coastal swamp restoration (Louisiana). Ecological Restoration18: 200-201.
Allen, J.A., K.W. Krauss, N.C. Duke, O. Björkman, D.R. Herbst & C. Shih. 2000. Bruguiera species in Hawai’i: systematic considerations and ecological implications. Pacific Science 54: 331-343.
Doyle, T.W. & K.W. Krauss. 1999. The sands and sambars of St. Vincent Island. Florida Wildlife 53: 22-25.
Krauss, K.W., J.L. Chambers & J.A. Allen. 1998. Salinity effects and differential germination of several half-sib families of baldcypress from different seed sources. New Forests 15: 53-68.
Allen, J.A., W.H. Conner, R.A. Goyer, J.L. Chambers & K.W. Krauss. 1998. Chapter 4: Freshwater forested wetlands and global climate change. Pages 33-44 in G.R. Guntenspergen and B.A Vairin (eds.), Vulnerability of coastal wetlands in the Southeastern United States: climate change research results, 1992-97. U.S. Geological Survey, Biological Resources Division Biological Science Report USGS/BRD/BSR-1998-0002. 101 p.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.