Two conservation groups challenge adverse summary judgment rulings in án action alleging violations of the Magnuson-Stevens Fishery Conservation and Management Act (the Magnuson-Stevens Act), 16 U.S.C. §§ 1851, 1853, 1854, and the Administrative Procedure Act (the “APA”), 5 U.S.C. §§ 553, 706. Conservation Law Foundation (“CLF”) and Oceana (f/k/a American Oceans Campaign) allege that in implementing Framework Adjustment 14 to the Atlantic Sea Scallop Fishery Management Plan (“Framework 14”), the National Marine Fisheries Service (“NMFS”) and other federal defendants1 failed to meet their procedural and substantive obligations under governing law. The district court found that Framework 14 was lawful. We affirm.
I. Factual and Procedural Background
On May 31, 2001, the plaintiffs initiated an action challenging Framework 14, a rule that adjusted certain restrictions on sea scallop fishing in the Atlantic coastal waters.2 The plaintiffs challenged Framework 14 on both substantive and procedural grounds. First, they alleged that NMFS failed to meet its substantive management obligations under the Magnuson-Stevens Act, 16 U.S.C. §§ 1851(a)(9), *241853(a)(7) & (a)(ll), and the APA.3 Second, they claimed that NMFS’s failure to provide a 15-day public comment period violated the Magnuson-Stevens Act, 16 U.S.C. § 1854(b), and the APA, 5 U.S.C. §§ 553, 706(2)(D). The plaintiffs asked the district court to declare Framework 14 in violation of the governing statutes and to “remand” it with the requirement that NMFS remedy the alleged deficiencies. They also sought their fees, costs, and expenses.
In September 2001, the parties submitted to the district court a joint proposal for briefing and discovery. See Local Rule 16.1. In the proposal, the plaintiffs requested that the court expedite the case pursuant to 16 U.S.C. § 1855(f)(4). 4 Over the next few months, the parties filed cross motions for summary judgment.5 The district court heard argument on the motions in May 2002. By September 2002, no decision had issued, and the plaintiffs renewed their request to expedite the case, alerting the court to the fact that Framework 14 would expire by its own terms in March 2003.
On October 31, 2002, the district court denied the plaintiffs’ motion for summary judgment and granted the defendants’ motions. See Conservation Law Found. v. United States Dep’t of Commerce, 229 F.Supp.2d 29 (D.Mass.2002). The court found that the Magnuson-Stevens Act did not mandate public comment for a rule such as Framework 14 and that the public comment period required under the APA had been waived for good cause. See id. at 34 n. 10. The court also concluded that NMFS had considered the substantive issues raised by the plaintiffs and did not act arbitrarily and capriciously in implementing Framework 14. See id. at 34. The plaintiffs appealed. On March 1, 2003, while this appeal'was pending, Framework 14 was superseded by Framework 15.6
II. Analysis
A. Mootness
We turn first to the question of mootness. See Roe v. Wade, 410 U.S. 113, 125, 93 S.Ct. 705, 35 L.Ed.2d 147 (1973) (“The usual rule in federal cases is that an actual controversy must exist at stages of appellate or certiorari review, and not simply at the date the action is initiated.”). The defendants contend that the expiration of Framework 14 rendered this case moot. See Gulf of Maine Fishermen’s Alliance v. Daley, 292 F.3d 84, 88 (1st Cir.2002). As the parties invoking the mootness doctrine, the defendants bear a “heavy” burden in attempting to establish its applicability. Mangual v. Rotger-Sabat, 317 F.3d 45, 61 (1st Cir.2003). And should they merely cease voluntarily the conduct originally challenged, they must demonstrate that it is “absolutely clear that the allegedly wrongful behavior could not reasonably be expected to recur.” Id. (citing United States v. Concentrated Phosphate Export Ass’n, Inc., 393 U.S. *25199, 203, 89 S.Ct. 361, 21 L.Ed.2d 344 (1968)).
The defendants attempt to carry this burden with respect to both of the plaintiffs’ claims by citing to Gulf of Maine, a case in which we affirmed the district court’s finding of mootness where a challenged framework affecting groundfish was superseded while cross motions for summary judgment were pending. See 292 F.3d at 87. In that case, an organization of commercial fishermen alleged that a framework was both procedurally deficient for lack of adequate notice and comment and substantively unlawful because of its closure of inshore fishing areas. See id. The appellant urged us to find that the alleged harms continued, despite the promulgation of subsequent frameworks, and that the issues therefore were not moot. See id. at 88. We rejected that argument, concluding that the promulgation of a new framework in compliance with procedural guidelines and based on new data rendered the challenges. to the superseded framework moot. See id.
CLF and Oceana respond with arguments similar to those made by the appellant in Gulf of Maine. As to their substantive challenge to Framework 14, they contend that the harms caused by NMFS’s failure to close the four fishing areas were perpetuated through Framework 15. This, they say, means that their substantive claim remains live, and for support they rely heavily on Northeastern Florida Chapter of the Associated General Contractors of America v. City of Jacksonville, 508 U.S. 656, 113 S.Ct. 2297, 124 L.Ed.2d 586 (1993). There, a challenged ordinance that accorded preferential treatment to minority businesses for city contracts was repealed and replaced with a modified version weeks after the Supreme Court had granted certiorari. See id. at 660-61, 113 S.Ct. 2297 (noting three alterations in ordinance, including adoption of five- to sixteen-percent “participation goals” in place of ten percent “set-aside” of city contracts earmarked for minority businesses). These modifications were not enough to render the controversy moot. The Supreme Court concluded that “[tjhere is no mere risk that [the city] will repeat its allegedly wrongful conduct; it has already done so.” Id. at 662, 113 S.Ct. 2297. The analogy to Northeastern Florida is useful here.
On its face, Framework 15 is largely an extension of Framework 14. See Fed.Reg. 9580, 9581 (Feb. 28, 2003) (noting that Framework 15’s only modification of the management measures that previously had been in effect was an increase in certain limits on the amount of scallops that could be held on board a fishing vessel). And as a practical matter, it appears that Framework 15 was designed merely to maintain the status quo until NMFS could complete a more comprehensive overhaul of its management measures through an amendment to the scallop FMP.7 NMFS states that Framework 15 is based on entirely new data about the condition of the scallop resource, NMFS Br. at 23, 27-28; cf. Gulf of Maine, 292 F.3d at 88, but it identifies no portion of the record to support this assertion. See Mulvihill v. Top-Flite Golf Co., 335 F.3d 15, 28 (1st Cir.2003) (declining to consider argument where litigant “ma[de] no attempt either to *26marshal the pertinent facts or to engage in reasoned analysis”); see also United States v. Zannino, 895 F.2d 1, 17 (1st Cir.1990) (“[I]ssues adverted to in a perfunctory manner, unaccompanied by some effort at developed argumentation, are deemed waived.”)- In any event, we have studied the record with care and cannot tell whether and to what extent Framework 15 was developed with new underlying data. Consequently, we cannot say that the challenged conduct will not recur or has not already recurred. See Northeastern Florida, 508 U.S. at 662, 113 S.Ct. 2297.
Whether we characterize the expiration of Framework 14 as a “voluntary cessation” of conduct by NMFS subject to the same standards as in Northeastern Florida, the core question Article III compels us to ask is whether our adjudication of the issue can grant meaningful relief. Cf. Gulf of Maine, 292 F.3d at 88. Here, it appears that the same allegedly harmful scheme continues. No matter how the issue is framed, we have no difficulty concluding that, where a challenged regulation continues to the extent that it is only superficially altered by a subsequent regulation, we are capable of meaningful review. See Schall v. Martin, 467 U.S. 253, 257 n. 2, 104 S.Ct. 2403, 81 L.Ed.2d 207 (1984) (concluding that changes in general statutory scheme did not moot challenge where contested provision remained the same); Brockington v. Rhodes, 396 U.S. 41, 43, 90 S.Ct. 206, 24 L.Ed.2d 209 (1969) (per cu-riam) (finding that suit attacking requirement that nominating petitions be signed by seven percent of voters on ground that no more than one percent could be required was not mooted by new statute reducing signature requirement to four percent); Keyishian v. Board of Regents of the University of the State of New York, 385 U.S. 589, 596, 87 S.Ct. 675, 17 L.Ed.2d 629 (1967) (noting that abandonment of requirement that employees disclaim membership in Communist party did not render challenge to constitutionality of procedure moot where underlying statutes and regulations remained). The plaintiffs’ challenge to the substance of Framework 14 is not moot.
As to their procedural challenge to Framework 14, CLF and Oceana begin their response to NMFS’s mootness arguments by acknowledging that Framework 15 was promulgated in a proeedurally proper manner. Yet, the plaintiffs argue, their challenge remains live because NMFS’s conduct is “capable of repetition, yet evading review.” See Gulf of Maine, 292 F.3d at 88-89 (quoting Weinstein v. Bradford, 423 U.S. 147, 149, 96 S.Ct. 347, 46 L.Ed.2d 350 (1975)). The defendants again point to Gulf of Maine, in which we rejected the application of this exception and found the issue moot. See id. at 89.
Although the parties present compelling arguments on both sides of the debate, we find that a more straightforward resolution of the issue is readily available on the facts of this case. NMFS has not shown, as it must, that the alleged procedural deficiency will not recur. See Friends of the Earth, Inc. v. Laidlaw Envtl. Servs., 528 U.S. 167, 189, 120 S.Ct. 693, 145 L.Ed.2d 610 (2000) (requiring, in cases involving voluntary cessation of challenged conduct, that party claiming mootness satisfy heavy burden of demonstrating that allegedly wrongful behavior could not reasonably be expected to recur). To the contrary, NMFS maintains that the Magnuson-Stevens Act does not require notice and comment for framework adjustments. Likewise, NMFS argues that its routine waivers of notice and comment under the APA have been wholly proper.8 The fact that NMFS volun*27tarily provided a public notice period in promulgating Framework 15 therefore does not suggest a change of heart as. to whether the process was legally required. Rather, as NMFS’s counsel acknowledged at oral argument, the public notice period preceding the enactment of Framework 15 was provided “out of an abundance of caution” in light of this appeal. Under these circumstances, NMFS’s voluntary cessation of the challenged conduct does not render the challenge moot. See Adams v. Bowater, Inc., 313 F.3d 611, 613-15 (1st Cir.2002) (issue not moot where a recurrence of the challenged conduct is highly likely).
B. Merits
Concluding as we do that the issues before the district court continue to present a live controversy on appeal, we turn to the merits of the case. The district court’s entry of summary judgment is subject to de novo review. See Associated Fisheries, 127 F.3d at 109. In the administrative law context, however, this review is limited, even at the summary judgment stage. See id. This is because the Magnuson-Stevens Act adopts the APA standard of review, which permits a court to upset an agency action only if it is arbitrary, capricious, or otherwise contrary to law. See id. (citing 5 U.S.C. § 706(2)(A)-(D)). Therefore,'our task is to determine whether the action “was consonant with [the agency’s] statutory powers, reasoned, and supported by substantial evidence in the record.” Id.
1. Substantive challenge
CLF and Oceana contend that Framework 14 is arbitrary and capricious in failing to mandate the closure of scallop-harvesting in four areas. To succeed on this claim, they must demonstrate that NMFS lacked a rational basis for adopting the framework. See Associated Fisheries of Maine, Inc. v. Daley, 127 F.3d 104, 109 (1st Cir.1997). That showing may be made where “the agency relied on improper- factors, failed to consider pertinent, aspects of the problem, offered a rationale contradicting the evidence before it, or reached a conclusion so implausible that it cannot be attributed to a difference of opinion or the application of agency expertise.” Id.
Under the Magnuson-Stevens Act, NMFS has a duty to minimize to the extent practicable (1) adverse effects on essential fish habitat (“EFH”),9 16 U.S.C. § 1853(a)(7); and (2) bycatch (fish that are caught but not sold or kept for personal use) and bycatch mortality, 16 U.S.C. §§ 1851(a)(9), 1853(a)(ll). The plaintiffs *28argue that NMFS violated these statutory-obligations in rejecting the closure of the four fishing areas. As they see it, NMFS’s decision was irreconcilable with record evidence that the closures would be beneficial with respect to EFH and by-catch. The plaintiffs also fault NMFS’s analysis, claiming that the agency ignored relevant factors they should have considered and failed to articulate a rational basis for declining to implement the closures.
These arguments are flawed to the extent that they consider the closure alternative in isolation, discounting numerous other restrictions on scallop fishing imposed by Framework 14. See CLF, 229 F.Supp.2d at 34 (noting that Framework 14 maintained closures of three large scallop fishing areas, as well as “restrictions on days at sea, catch and mesh sizes, and seasonal access to sensitive areas”). Moreover, the plaintiffs essentially call for an interpretation of the statute that equates “practicability” with “possibility,” requiring NMFS to implement virtually any measure that addresses EFH and by-catch concerns so long as it is feasible. Although the distinction between the two may sometimes be fine, there is indeed a distinction. The closer one gets to the plaintiffs’ interpretation, the less weighing and balancing is permitted. We think by using the term “practicable” Congress intended rather to allow for the application of agency expertise and discretion in determining how best to manage fishery resources.
We also note that CLF’s and Oceana’s characterization of the record is somewhat faulty. NMFS in fact considered the closure alternative and other potential management measures in a Final Supplemental Environmental Impact Statement (“FSEIS”) that analyzed the probable effects of Framework 14. The FSEIS concluded, inter alia, that the closures would provide only limited, short-term benefits to habitat. These benefits would be “mitigated to some degree” because other (non-scallop) fishing would continue in the closed areas. The FSEIS also found that (1) implementing no new closures would have a greater economic benefit for the fishing seasons Framework 14 was intended to address than would the closure alternative, and (2) any long-term benefits that might accrue as a result of closures were uncertain and might not outweigh the benefits of forgoing new closures. It is not our role to second guess these determinations. See Associated Fisheries, 127 F.3d at 109 (“Even if a reviewing court disagrees with the agency’s conclusions, it cannot substitute its judgment for that of the agency.”). On this record, the plaintiffs have not shown that NMFS acted irrationally in implementing Framework 14 without imposing additional closures.
2. Procedural challenge
a. The Magnuson-Stevens Act
The plaintiffs argue that NMFS’s failure to provide a public comment period in developing Framework 14 violated the Magnuson-Stevens Act, 16 U.S.C. § 1854(b)(1)(A). Section 1854(b) requires notice and comment for regulations prepared under 16 U.S.C. § 1853(c), namely regulations that are deemed nécessary to “implementing a fishery management plan or fishery management plan amendment,” or to modifying such regulations. See 16 U.S.C. § 1853(c). The district court distinguished § 1853(c) “regulations” from framework adjustments, looking to neighboring § 1855(f) for interpretive guidance. See CLF, 229 F.Supp.2d at 33. There, Congress drew a distinction between “regulations promulgated by the Secretary” and “actions that are taken by the Secretary under regulations which implement a fishery management plan.” See 16 U.S.C. § 1855(f)(2).
*29Recognizing that a framework adjustment such as Framework 14 was implemented through an action of the Secretary of Commerce (by his designee) after a finding by the.Council that a formal regulation was “neither necessary [n]or appropriate,” the district court concluded that framework adjustments are properly characterized as “actions,” hot regulations. CLF, 229 F.Supp.2d at 33. The court found, therefore, that framework adjustments are not subject to the public comment requirements of § 1854(b). See id. at 33-34. The plaintiffs have not presented us with any basis for doubting the correctness of the court’s analysis, so we affirm its ruling on the basis of its sound reasoning.10
b. The APA
In the alternative, the plaintiffs allege procedural harm under the APA because NMFS failed to demonstrate “good cause” for waiving notice and comment. See 5 U.S.C. § 553(b)(3)(B). They characterize Framework 14’s statement of the grounds for waiver as mere “boilerplate.” 11 See n. 8, above; Natural Res. Def. Council, Inc. v. Evans, 316 F.3d 904, 912 (9th Cir.2003). Even if we were to agree with the plaintiffs on this point, however, any error on NMFS’s part was harmless. See Riverbend Farms, Inc. v. Madigan, 958 F.2d 1479, 1487 (9th Cir.1992) (“The APA requires that we take ‘due account’ of the harmless error rule.”); see also Save Our Heritage, Inc. v. FAA, 269 F.3d 49, 61 (1st Cir.2001)(“The doctrine of harmless error is as much a part of "judicial review of administrative action as of appellate review of trial court judgments”). We reach such a conclusion because, based on this record, the omission of a formal public comment period “clearly had no bearing on the procedure used or the substance of [the] decision reached.” Riverbend Farms, 958 F.2d at 1487 (quoting Sagebrush Rebellion, Inc. v. Hodel, 790 F.2d 760, 764-65 (9th Cir.1986)); see also Little Bay Lobster Co., Inc. v. Evans, 352 F.3d 462, 468 (1st Cir.2003).
Here, the development of Framework 14 generated fourteen public meetings. See 66 Fed.Reg. 24,052, 24,054 (May 11, 2001). NMFS followed its procedures for framework adjustments as set forth at 50 C.F.R. § 648.55, a process with which the plaintiffs were familiar. See Riverbend Farms, 958 F.2d at 1487-88 (finding technical noncompliance with notice requirements under Federal Land Policy Management Act constituted harmless error where “all parties before [the court] knew the ground rules” of the agency’s weekly procedures). The preparation of a" supplemental environmental impact statement afforded additional opportunities for public participation *30usually unavailable during the framework adjustment process.12 The plaintiffs took advantage of these opportunities, submitting written and oral comments prior to and during Council meetings.13 The plaintiffs contend that their comments were ignored, and that, had formal notice and comment occurred, NMFS might have decided to explore their suggested alternatives further.14 CLF/Oceana Br. at 44 (“Had NMFS taken public comment, NMFS might have overruled the council and adopted more protective measures.”). The administrative record does not bear this out, however. For example, two March 2001 decision memoranda from NMFS’s Regional Administrator to NOAA’s Acting Assistant Administrator for Fisheries analyze the concerns raised by the plaintiffs. These analyses occurred before Framework 14 was finalized. The plaintiffs disregard the significance of this agency-level consideration of their concerns, choosing to emphasize the ways that the Council may have slighted them procedurally.15 Further, the plaintiffs fail to identify any comment that they were prevented from making because of this alleged procedural defect that would have made a difference in the result. See Little Bay Lobster, 352 F.3d at 468. The plaintiffs have demonstrated that some of their suggestions were rejected, but not that they were ignored. In this context, the difference is important. We find no prejudice.
III. Conclusion
For the foregoing reasons the judgment of the district court is AFFIRMED.