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Fig. 6 in Molecular phylogenies support taxonomic revision of three species of Laurencia (Rhodomelaceae, Rhodophyta), with the description of a new genus

Fig. 6. Scenario of Osmundea biogeography using frame from Scotese animation (www.scotese.com/) at 100 Ma. South America and Africa are starting to move apart. Hypothetical ancestors (A) of widespread and diverse Osmundea Fora along Tethyan shores of which Osmundea caspica (A.D.Zinova & Zaberzhinskaya) comb. nov. (b) is almost certainly a relic. Since 100 Ma, Osmundea has colonized the Atlantic Ocean (c, e). Brazilian O. sanctarum M.T.Fujii & Cord.-Mar. (c) is likely a relic of the lineage at the origin of the clade that entered the Pacifc (d) and colonized the Americas.

Fig. 5 in Molecular phylogenies support taxonomic revision of three species of Laurencia (Rhodomelaceae, Rhodophyta), with the description of a new genus

Fig. 5. Osmundea caspica (A.D.Zinova & Zaberzhinskaya). Sangachal Bay, Azerbaijan, September 2003, dredged. A. Habit of herbarium voucher specimen with epiphytic acrochaetioid red algae. B. Outer cortical cells in surface view, elongated along the thallus axis, lacking secondary pit connections. C. Longitudinal section through outer cortex (scale bar as in B). D. Part of mature spermatangial receptacle, showing spermatangial flaments each terminating in a large rounded sterile cell. E. Spermatangial flament bearing mature spermatia and terminating in a rounded sterile cell.

Fig. 4 in Molecular phylogenies support taxonomic revision of three species of Laurencia (Rhodomelaceae, Rhodophyta), with the description of a new genus

Fig. 4. Palisada crustiformans (McDermid). A. Voucher specimen of P. crustiformans (ARS03327/BISH 766726) collected at Hawaii Island (type locality). B. Outer cortical cells in surface view. C. Detail of outermost cortical cell showing small spherical structure similar to 'corps en cerise' and secondary pit connections with adjacent cells.

Fig. 3 in Molecular phylogenies support taxonomic revision of three species of Laurencia (Rhodomelaceae, Rhodophyta), with the description of a new genus

Fig. 3. Ohelopapa fexilis (Setch.). A. Voucher specimen (01A07 / UPF4223) collected at Tahiti (type locality). B. Transversal section through outer cortex showing a translucent outermost cortical layer lacking secondary pit connections between cells.

Fig. 1 in Molecular phylogenies support taxonomic revision of three species of Laurencia (Rhodomelaceae, Rhodophyta), with the description of a new genus

Fig. 1. Tree inferred from rbcL using Bayesian analysis (BI) and including 111 specimens of members of the Laurencia complex and six outgroup taxa. The numbers above branches indicate Bayesian posterior probabilities (pp) and below branches indicate bootstrap values (bp) inferred from 1000 ML bootstrap replicates (ML); pp <0.95 and bp <75% are not shown. Taxa for which new sequences were produced are indicated in bold.

Fig. 2. Tree inferred from COI-5P in Molecular phylogenies support taxonomic revision of three species of Laurencia (Rhodomelaceae, Rhodophyta), with the description of a new genus

Fig. 2. Tree inferred from COI-5P + rbcL + LSU using Bayesian analysis (BI) and including 30 specimens of the Laurencia complex and two outgroup taxa. The numbers above branches indicate Bayesian posterior probabilities (pp) and below branches indicate bootstrap values (bp) inferred from 1 000 ML bootstrap replicates (ML); pp <0.95 and bp <75% are not shown.

Santa Barbara Coastal site, station Arroyo Burro Reef, Santa Barbara Channel, study of plant cover of Laurencia spectabilis in units of percent on a yearly timescale

The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Barbara Coastal (SBC) contains plant cover of Laurencia spectabilis measurements in percent units and were aggregated to a yearly timescale.

Santa Barbara Coastal site, station Arroyo Quemado Reef, Santa Barbara Channel, study of plant cover of Laurencia spectabilis in units of percent on a yearly timescale

Santa Barbara Coastal site, station Carpinteria Reef, Santa Barbara Channel, study of plant cover of Laurencia in units of percent on a yearly timescale

The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Barbara Coastal (SBC) contains plant cover of Laurencia measurements in percent units and were aggregated to a yearly timescale.

Santa Barbara Coastal site, station Goleta Bay, Santa Barbara Channel, study of plant cover of Laurencia in units of percent on a yearly timescale

The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Barbara Coastal (SBC) contains plant cover of Laurencia measurements in percent units and were aggregated to a yearly timescale.

Santa Barbara Coastal site, station Naples Reef, Santa Barbara Channel, study of plant cover of Laurencia in units of percent on a yearly timescale

The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Barbara Coastal (SBC) contains plant cover of Laurencia measurements in percent units and were aggregated to a yearly timescale.

Santa Barbara Coastal site, station Naples Reef, Santa Barbara Channel, study of plant cover of Laurencia spectabilis in units of percent on a yearly timescale

Santa Barbara Coastal site, station Santa Cruz Island, Diablo, Santa Barbara Channel, study of plant cover of Laurencia in units of percent on a yearly timescale

The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Barbara Coastal (SBC) contains plant cover of Laurencia measurements in percent units and were aggregated to a yearly timescale.

Santa Barbara Coastal site, station Santa Cruz Island, Diablo, Santa Barbara Channel, study of plant cover of Laurencia spectabilis in units of percent on a yearly timescale

Santa Barbara Coastal site, station Santa Cruz Island, Twin Harbor West, Santa Barbara Channel, study of plant cover of Laurencia in units of percent on a yearly timescale

The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Barbara Coastal (SBC) contains plant cover of Laurencia measurements in percent units and were aggregated to a yearly timescale.

FIGURE 19 in Chondrophycus anabeliae (Rhodomelaceae, Ceramiales), a new species in the Laurencia complex from the Mexican Caribbean

FIGURE 19. Consensus tree derived from Neighbor-joining analyses of rbcL sequences. The bootstrap values for NJ and ML, and Bayesian inference (BI) posterior probabilities are shown at the nodes (NJ/ML/BI);—indicates lack of bootstrap support; * indicates bootstrap support = 100%. Taxa marked in bold indicate newly determined sequences.

FIGURES 13–18 in Chondrophycus anabeliae (Rhodomelaceae, Ceramiales), a new species in the Laurencia complex from the Mexican Caribbean

FIGURES 13–18. Chondrophycus anabeliae sp.nov. Reproductive structures. Fig. 13. Procarp-bearing segment with five pericentral cells, the fifth becoming the supporting cell (su) of the carpogonial branch; central cell of procarp-bearing segment (c) (10 μm). Fig. 14. Procarp before fertilization with four-celled carpogonial branch (cb), carpogonium (cg), trichogyne (tr), and supporting cell (su) (10 μm). Fig. 15. Longitudinal section through a female branchlet with partly immersed cystocarp and protuberant ostiole (100 μm). Fig. 16. Longitudinal section through a branchlet showing right-angle arrangement of the tetrasporangia (100 μm). Fig. 17. Transverse section of tetrasporangial axial segments showing an axial cell (a) and two vegetative pericentral cells (p) out of focus; an additional third fertile pericentral cell is formed in the opposite position (arrow) (25 μm). Fig. 18. Detail of a fertile pericentral cell (fp) with two pre-sporangial cover cells, one out of focus (pr), one post-porangial cell (po), and a tetrahedrically divided tetrasporangium (te). Note cortical cells markedly projected.

FIGURES 9–12 in Chondrophycus anabeliae (Rhodomelaceae, Ceramiales), a new species in the Laurencia complex from the Mexican Caribbean

FIGURES 9–12. Chondrophycus anabeliae sp.nov. Vegetative and reproductive structures. Fig. 9. Transverse section of the upper portion of a branch showing two superimposed axial cells (a) each with two pericentral cells (p) (25 μm). Fig. 10. Transverse section showing two axial cells (a), each of which has two pericentral cells (p) and a basal trichoblast cell (bt) (25 μm). Fig. 11. Longitudinal section through a male branch with a cup-shaped spermatangial pit (50 μm). Fig. 12. Detail of trichoblast-type spermatangial branches with terminal vesicular sterile cells. Note spermatangia with an apical nucleus (arrow) (30 μm).

FIGURES 5–8 in Chondrophycus anabeliae (Rhodomelaceae, Ceramiales), a new species in the Laurencia complex from the Mexican Caribbean

FIGURES 5–8. Chondrophycus anabeliae sp.nov. Vegetative structures. Fig. 5. Surface view of translucent cortical cells (25 μm). Fig. 6. Surface view of subcortical cells. Note secondary pit connections between pigmented cortical cells (arrow) (25 μm). Fig. 7. Transverse section of the thallus (100 μm). Fig. 8. Detail of the two-layered cortical cells. Note small translucent outer cortical cells and large pigmented inner cortical cells with secondary pit connections between them (25 μm).